Drifty Posted April 28, 2005 Report Share Posted April 28, 2005 In auckland, where do you all get it from, when is a good time(tide/ daynight etc), do you need to store it for a certain length of time before using, Can you alternate if needed between nsw and salt powder Quote Link to comment Share on other sites More sharing options...
petplanet Posted April 28, 2005 Report Share Posted April 28, 2005 I used to use Takapuna Boat Ramp. Use straight away or store for three months. In theory everthing dies in the water and settles to the bottom. In reality it would probably be fine to use anytime. Best time to collect is incoming tide, near full, calm, still day and not just after rough weather or rain. Quote Link to comment Share on other sites More sharing options...
suphew Posted April 28, 2005 Report Share Posted April 28, 2005 I wait for 3 days of no rain to be sure there is no run off from farms, storm water etc. lately I have also been taking 60 lliter black barrol thing as well as 3 x 20l containers and using the barrol water a week later if the weather is no good, this allows me to do 15odd percent weekly changes. My water params look pretty good so I willl proberly slow down the changes as it gets more difficult to get fine patches. Quote Link to comment Share on other sites More sharing options...
chimera Posted April 28, 2005 Report Share Posted April 28, 2005 arkles bay for me Quote Link to comment Share on other sites More sharing options...
Ira Posted April 28, 2005 Report Share Posted April 28, 2005 That reminds me, I need to check the tides for this weekend...Hmmm, 1:45...I'll have to try and have a look at whitereia park, might be better than where I've been getting water. According to Wises it's only a couple K difference in distance though. Quote Link to comment Share on other sites More sharing options...
Control Posted April 28, 2005 Report Share Posted April 28, 2005 I get Mine at high tide when it is calm. I use some straight away and put the rest in a 1000 litre tank that I have out the back which is always cycling itself. Aaron. Quote Link to comment Share on other sites More sharing options...
Aquagold Posted April 28, 2005 Report Share Posted April 28, 2005 Do you aerate the water while you have it sitting? What's the longest it left before use? Do you prefilter before putting in your system, say to 50>10mu? Quote Link to comment Share on other sites More sharing options...
Control Posted April 28, 2005 Report Share Posted April 28, 2005 Do you aerate the water while you have it sitting? What's the longest it left before use? Do you prefilter before putting in your system, say to 50>10mu? Yes. and my storage tank has a small filter in it. I've never really worried about that because the water is always kept alive, and I like to do alot of water changes in my tanks so it doesn't stay around for that long. If you keep it alive it wont be a problem. No. You could find that the last one may vary with differant people depending on how they are runnig there tanks . Aaron. Quote Link to comment Share on other sites More sharing options...
Aquagold Posted April 28, 2005 Report Share Posted April 28, 2005 Hi Aaron When I was runnuing the paua farm we had our main reservour hooked up to our system to keep it turning over as we were told that still seawater had a bacterial bloom in it once it sat for too long. I am setting up a research system at the moment and it's good to talk around a bit. Ta Quote Link to comment Share on other sites More sharing options...
petplanet Posted April 28, 2005 Report Share Posted April 28, 2005 The water is normally pretty clear anyway. If it has sat for awhile everything will have settled so it does not need filtering. It never gets old. Just store it in the dark. Quote Link to comment Share on other sites More sharing options...
HelifaxNZ Posted October 9, 2005 Report Share Posted October 9, 2005 Hi folks, I found this thread about keeping NSW. I always thought you had to filter or keep the water for a couple of days before you introduce it to your tank? Quote Link to comment Share on other sites More sharing options...
chimera Posted October 9, 2005 Report Share Posted October 9, 2005 could do if you had a powerhead circulating/oxygenating the water. i change immediately after collecting, otherwise have to wait 2-3 months in the dark - not you, the water Quote Link to comment Share on other sites More sharing options...
Pies Posted October 9, 2005 Report Share Posted October 9, 2005 Ive used it within an hr of being in the ocean, after a day, a week and a month. Doesn't seem to make any difference. Pie Quote Link to comment Share on other sites More sharing options...
HelifaxNZ Posted October 9, 2005 Report Share Posted October 9, 2005 So do you guys heat it up first? and do you pour it into the Sump or the main tank? Cheers. Quote Link to comment Share on other sites More sharing options...
Pies Posted October 9, 2005 Report Share Posted October 9, 2005 I don't heat it up, although it would be a good idea. Mine goes into the sump. Pie Quote Link to comment Share on other sites More sharing options...
chimera Posted October 9, 2005 Report Share Posted October 9, 2005 dont heat it up either, although i used too. temp drops from 25 to 23 when doing a 20% water change. not enough to worry about. Quote Link to comment Share on other sites More sharing options...
HelifaxNZ Posted October 10, 2005 Report Share Posted October 10, 2005 Thanks Guys, Sorry for all the questions, but I also read the salinity of NSW is higher (1029). Is that ok, or do you have to dilute the NSW? Quote Link to comment Share on other sites More sharing options...
chimera Posted October 10, 2005 Report Share Posted October 10, 2005 not that i've measured, salinity seems to be around 1.026 I dont think it would vary that much around nzl? i wonder if salinity could be higher if you took a sample from the top of the water (where agitation of the waves makes the salt more 'frothy') versus deeper under the water? temperature is the only outside influence i know of that effects salinity. Quote Link to comment Share on other sites More sharing options...
suphew Posted October 10, 2005 Report Share Posted October 10, 2005 Salt water more heavy than fresh (hence the specific gravity is higher) therefore IF there was a difference the water on top would have a lower SG Quote Link to comment Share on other sites More sharing options...
wasp Posted October 10, 2005 Report Share Posted October 10, 2005 If the salinity is higher, do adjust it down. Bear in mind this will also dilute calcium, etc. These may then need to be adjusted. But do that after you added the water to the tank. Quote Link to comment Share on other sites More sharing options...
chimera Posted October 10, 2005 Report Share Posted October 10, 2005 also, might be handy for you: check out the "salinity, evaporation calculator" under "water chemistry" section on the reference sites 'sticky' at the top of the saltwater section... http://www.fnzas.org.nz/fishroom/here-vp75310.html just goes to show how important it is to top-up fresh water as close to the exact amount of evaporation each day otherwise over time salinity will rise. Quote Link to comment Share on other sites More sharing options...
slappers Posted October 10, 2005 Report Share Posted October 10, 2005 yes i agree got my fish in the garage at the moment forgot to check for evaporation lost a few fish done a few checks and found my salt 1.30+ :oops: :oops: :oops: me a worry at times Quote Link to comment Share on other sites More sharing options...
Pies Posted October 10, 2005 Report Share Posted October 10, 2005 It takes a lot to move the salinity though. We syphoned out about 3x 10L buckets on Sunday for TomGun and I just replaced it with about 30L of freshwater. Either my refractomoter is broke or it made no difference. Salinity of NSW here is about .026 once its warmed to 25degrees. Don't forget temprature will effect the reading. Pie Quote Link to comment Share on other sites More sharing options...
Ira Posted October 10, 2005 Report Share Posted October 10, 2005 According to my math that would have dropped your salinity from 1.026 to 1.0256 I don't remember your total volume, but that's based on 2000Lish. So...I'd say .0004 is within the margin of error for your average refractometer. Quote Link to comment Share on other sites More sharing options...
Pies Posted October 10, 2005 Report Share Posted October 10, 2005 Be over 2500 litres of water, so yeah, made no disconcernable difference at all. Quote Link to comment Share on other sites More sharing options...
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