tang

just looking on the net to see what sort of seaweed i have growing and looks like some of these http://www-csgc.ucsd.edu/STORIES/Cauler ... e2006.html

i see it has a tunze overflow so it very well could be elc stream looks like one

cheers all

black slime gone just left it aloneskimmers and streams got rid of it fish only tank ,300ltrs wet&dry filter topup mce600 skimmer

every time i do something to mine one or two things allways pack a sad

aqua one 180 glass with rock disp 480ltrs not the way to go ,if i do it again will be custom tank with sump

3 billion chinese 1 fish a week each or one a month each do the maths

Twelve million pieces of living coral and 20 million tropical fish still seems like alot of life being taken from the sea

20% and only through fights shrimp mainly ,1 wrass through bad addvice touch wood!

buy a copperband

left side right side new blenny doing a good job on the back glass thanks reef 8)

Hon Pete Hodgson 02 April 2001 Thank you for the invitation to speak here today. I am very much in favour of the theme of this gathering. Sharing knowledge is critically important for sustainable management of fisheries. In many respects our understanding of the marine environment and marine ecosystems is about a century behind our understanding of life on land. Cooperation amongst researchers - and between science, industry and government - will be crucial in the effort to correct that. I'm here as both Minister of Fisheries and Minister of Science. I think that's a fortunate coincidence of portfolios. I'm committed to making fisheries decisions based on good science. Actually the law requires me to, so that's just as well. The Fisheries Act says I must base my decisions on the best available information. It also embodies the precautionary approach, which means a lack of information leads to conservative decisions. Under this framework the quality of information available to me is crucial. That means good stock assessments, but not only that. It means good information on the effects of fishing on the marine environment. We don't have that properly covered yet. I don't think anyone does. But I have made it clear that it is a priority for me as Fisheries Minister to drive an improvement in that area of marine research. We're making a start with a substantial investment - just over $40 million in the next five years - in the science and management of marine biodiversity and marine biosecurity. The share of that going into marine biodiversity research is $14 million. That will cover database development, analysis and research on threats to biodiversity, and research on selected marine communities including seamounts, Spirits Bay off northern New Zealand, and Antarctica's Ross Sea. So I'm pleased to see that this research showcase is about much more than stock assessment, important as that is. The knowledge being shared here about reproductive biology and behaviour, about oceanic, larval and juvenile processes, about habitat, environment and biodiversity, about customary fisheries management and practice, and about commercial fisheries practices, technologies and product quality shows the kind of depth and range that I would hope for in a mature fishery. I should acknowledge, in case anyone thinks I'm overlooking it, that stock assessment of rock lobster has come along way in recent years and it continues to develop. The new length-based stock assessment model used for rock lobster is one of the most advanced we have, in that it makes use of all available data from the fishery. The incorporation of data from the industry log book and tagging programmes contributes significantly to the quality of the overall picture we have of the fishery Good stock assessment advice has been critical to the development of the management framework for rock lobster, which is amongst the most advanced for any New Zealand fishery. The introduction of decision rules for adjustments to catch levels - which benefit both stakeholders and Government by providing certainty about management action - has been based on advice from stock assessment scientists. It is vital, if those rules are to work, that they are consistent with biological objectives. There are still plenty of challenges in improving stock assessments, as this audience will be well aware. More precise quantification of removals from rock lobster fisheries remains an important task and predictive modelling is an area I would like to see further developed. I am aware of use of recruitment and settlement data in the West Australian rock lobster fishery to provide some predictive analysis of rock lobster stocks. Data on likely recruitment to the fishery will clearly add more certainty to management decisions. We also need to keep looking for improvements in estimates of MSY and BMSY. The law requires stocks to be managed to or above BMSY, but there is still a significant level of uncertainty surrounding the estimates for a number of stocks. I think the research on aquaculture propagation that's on show here is genuinely exciting. These are tricky beasts to raise. I know a little bit about that, as the locals in the audience will be aware by now, because I tried it myself before I got into politics. About 10 years ago I set up a 1000 litre recirculating saltwater aquarium in the basement of my house in Dunedin and kept crayfish in it. I got the adults to feed, mate and spawn. I then tried to grow the larvae through their thirteen stages in captivity, but only got them through to stage four before they all died. I visited the NIWA aquaculture research centre here in Wellington a few weeks ago where Graeme Moss's team have done much better than I did. In fact they've done better than just about anyone else in the world, with all due credit to those researchers in Japan. Given that rock lobster exports are already worth more than $100 million a year, cracking the secret of farming them is clearly going to be a stroke of brilliance. I wish every success to those working on this and I'll be watching with a great deal of personal interest. I want to close by mentioning a matter of wider interest to anyone involved with marine research, and that's the development of an Oceans Policy for New Zealand. The intention is to address the lack of integrated policy governing our oceans. We have extensive policies in this country for managing our land, but not for the marine environment. Nor do we have any integration between land and marine management. Inevitably, the wide variety of human interests in the oceans come into conflict. But without an over-arching policy framework guiding the decisions the Government and others are asked to make when that happens, many of the decisions are ad hoc, contradictory and inefficient. An Oceans Policy will also help us identify and address the inadequacies in our knowledge of ocean ecosystems and the impacts of various activities and events on the marine environment. It will help us work out what we don't know and what we need to know. We're beginning the development of the policy in a slightly unusual way, by launching a nationwide consultation process to find out what New Zealanders' values and priorities are in relation to the marine environment. Just over a week ago I announced the appointment of a widely experienced group of eight New Zealanders, led by Dame Catherine Tizard, to lead that consultation process. It's going to be a very challenging job. But I think we have a group that can tackle it in a way that increases understanding of the issues, and takes us some way towards finding the shared values necessary for a policy with lasting relevance. I urge you to take an interest in the Oceans Policy process as it develops over the next year or two. In the meantime, thank you again for the invitation to speak, and I hope this research showcase is as useful and interesting for you as it looks to me.

cheers, 8)

nitrate 0 phos 0 tried brushing ,have just left it alone for now ,what do you think / test kits are aq pharm ,phos kit is hag po4 cb dosnt realy get it all ,there are 9 shrimps, they and the other fish get the scraps the tangs the one doing all the pooing hes full on never stops he was only a baby a month ago

cb is a real guts loves blood w and brine s he gets 1 block brine s and 1/2 block blood w for himself each day ,the rock went in 1st sept was cooing for three months before that ,then the fish weer added 2 at a time

that brown stuff

Think a little more about those sudden and unexplained algae outbreaks that hobbyists report. They report these outbreaks even though in the instances when they occur testing would seem to indicate that all water quality chemistry parameters (especially phosphates) are extremely low (P04 < 0.04 ppm) and within recommended ranges, a set of circumstances where micro algae should NOT grow. Such low phosphate concentrations, and the fact that other water quality parameters are completely in line with generally recommended safe levels, should not give rise to the appearance of micro algae at all. Yet, hobbyists report that they, nevertheless, happen and often occur suddenly, at the most unexpected time. This is happening to experienced hobbyists and beginners alike. Everybody is, needless to say, stumped when this befalls him or her, even the experts. This being the case, why do these micro algae suddenly appear even though tank conditions and water quality do not account for such growth at all? It has been postulated and even proven that the long-term use of Kalkwasser precipitates phosphates out of the water (which Kalkwasser really does) and that these phosphate based compounds settle on and in the live rock in the aquarium, as well as in and on the substrate that may be present in the aquarium. Since these compounds are not soluble at the high pH levels, they are really not a cause for concern, because in their insoluble state, they are not available as nutrients for uptake by micro algae and the growth of the same. Over time they simply accumulate more and more in the tank as insoluble matter; which can, by the way, be siphoned out from time to time (not weekly, not monthly, but perhaps every six months or so). Insoluble matter is of no concern, since it cannot affect tank conditions. In its insoluble state, it is also inert and does not react in any way with the water in the aquarium. In this state, it certainly cannot provide nutrients for micro algae to grow profusely in some reported cases. Apparently, situations can, and may, however, occur whereby certain areas of the tank actually exhibit a different pH level than the one measured in the main body of water in the aquarium. In this instance, "different" means lower, and sometimes quite a bit lower, than the aquarium's pH level. Where would this occur and why? Can this, in fact, occur at all? The answer is yes in all cases demonstrated by empirical evidence that such micro algae outbreaks do occur (the reports by the hobbyists). They may not be the norm, but they happen frequently enough to be a cause of concern. Many hobbyists who report that such sudden growths have happened to them even though they have adhered to superior tank maintenance and husbandry techniques and practices. In view of these findings, we have to accept this as a fact. Fortunately the explanation is a lot simpler than one actually thinks. The remedies are not difficult to implement, either, as we shall see. The conditions that could lead to those outbreaks are really quite simple, when one thinks about it for a while and make a lot of sense from a chemistry and nutrient availability standpoint. Phosphates that are bound in an insoluble form are, therefore, not available to algae. But can and will go into solution because of pH fluctuations in certain areas of the aquarium, areas where much lower pH exists or develops than the actual pH of the aquarium. This is due to nothing more than basic chemistry principles, but principles we may have overlooked up to now. You may recall, though, that in books it is often stressed that rocks should be regularly cleaned off and that any precipitates should be removed. The recommendations had to do mostly with removing organic material that may otherwise decompose. It turns out that these regular cleanings had an additional benefit, removing insoluble, phosphate based compounds, thus preventing them from fitting into the scenario described here. When pH drops in those areas of the aquarium, these insoluble compounds break up with the result that orthophosphate goes back into solution, giving rise to the sudden appearance of micro algae growth, a growth that was totally unexpected and unpredictable given the tank's water quality conditions. As indicated, this falling pH syndrome occurs mainly in two types of areas in the aquarium: in the substrate and in the crevices in the live rock. Pollutants may build up in those areas and create conditions favorable for the pH to drop quite a bit (even though the drop is very local and does not spread to the rest of the aquarium). These localized drops in the pH level in the areas mentioned dissolve the phosphate compounds that are present there, phosphate compounds that were previously inert and now no longer are. This process puts orthophosphate back into the water. If this scenario occurs in enough areas of the aquarium, enough phosphate may, and will, re-dissolve for micro algae to suddenly start reappearing in the tank. Remember, it does not take a lot of phosphate for micro algae to grow. Levels as low as 0.05 ppm can bring about outbreaks that then need to be eradicated. Strong current in the aquarium, cleaning the rock, especially the crevices in those rocks, general maintenance and husbandry all work toward eliminating this situation from occurring. The continuous use of phosphate- and silicate removing compounds will certainly help as well. The silicate removing compounds prevent the reappearance of diatoms (brown algae growth). Changing compounds frequently enough is the key to getting them to adsorb any phosphates and silicates that may developing in this manner in your tank. The products mentioned should be changed at the slightest increase of phosphates in the tank or at the slightest appearance of tiny hairy or stringy filaments on the glass or acrylic panes of the aquarium. Most hobbyists, unfortunately, forget that these compounds do not last forever. The load in the tank, the type of filtration used, the amount fed, and the maintenance schedule you adhere to all contribute to either lengthening or shortening the life of these products. Test regularly and inspect your tank often. If you see any alga growth, even if it is very minimal, change the compounds immediately. Cleaning the rock in the tank is not complicated and can be done while it's in the tank or by removing it and doing so externally. Cleaning the live rock while it is in the aquarium. Using a length of flexible hose of approximately half inch inside diameter, create a siphon that leads to a bucket or a vat placed on the floor. Move with the hose from rock to rock and siphon off whatever detritus will come loose. Be careful not to suck any animals into the hose. To greatly reduce the amount of water you are removing, pinch the hose closed when you move from one area to another. Siphon out whatever lies on the bottom as well. Try to siphon between, behind and underneath the rocks also. This is not easy but, with a little practice, you will be amazed at how much dirt and detritus you actually remove from the tank. Watch the bucket or vat and empty when necessary. Keep siphoning until you see no more dirt or detritus. Since a good amount of water will be missing from the tank you will need to top off the aquarium. The water you use to do so should, ideally, have been prepared the day before so it time to age and all chemical reactions that need to take place have done so. Newly prepared saltwater added immediately to a tank creates stress due to the chemical reactions between the dry salt and components and the water. It takes from 18 to 24 hours for a batch of saltwater to stabilize itself. Additionally, if chlorine is present this process will eliminate it through simple aeration of the new saltwater mixture. There is no need to add dechlorinators to the water. Cleaning the rock outside the aquarium. - Have two buckets or vats filled with saltwater ready. - Have towels around - Place the buckets on a water resistant material [e.g. Plastic sheet] - Take one rock at a time. Place it in the first bucket and swish it around holding it firmly with your hand. As you do this the dirt that is present on the rock will come loose and mix with the - Now rinse the rock in the second bucket and then place it in the tank or in a holding vat. - Do this with all the live rock in your tank [ or as much as you can ]. - Before replacing the rock in the tank itself, give it a good cleaning using a powerheads output to rinse off the rocks and all detritus. This will greatly improve the water quality. Conclusion: Micro algae can reappear when phosphate compounds re dissolve in the water, especially if this occurs in several areas at the same time. We have seen that a low PH in those areas is the cause. To avoid this from happening you should ensure good strong current inside the tank, and clean the aquarium and the live rock regularly. Additionally, about every 6 months you should really give the tank a complete clean out to remove whatever precipitated phosphate compound may be present.

what is the life span of fire shrimp ,candy stripe shrimps? 8)

i have just put 2 x mce 600 on my tank dont have any sumps, mine dont foam all over the place they are running sweet as, empty thick brown sludge every 2 days cant here any noise from them either

chim-thumb nail size the one hairy one with red eyes about half as big again

saw 4 in the last week in my tank i have left them for now, 3 with tiger striped legs and black nippers and a bigger hairy one with red eyes and good size nipper arms hes got black nippers also the say get rid of them? have a shot of 3 of them

lets have one on feeding , how much ,type of food,how often. mine will only eat brine shrimp ,blood worms ,and algae,they turn down flake food , frozen sea food mix ,frozen mysis,havent tried mincing my own seafood yet

aqua one, if any thing breaks throw it away buy a new one still cheaper than paying for over priced german parts like impellers $65 and so on

ASW 25% month

Kids Tank 90ltr , wet&dry canister filter,deltec mce600 skimmer,2 x aqua clear power heads, chiller when sorted, waiting for the divers to get there crayfish & leather jacket tank sits at 20c needs to be 10c