TM Posted August 14, 2006 Report Share Posted August 14, 2006 Just wanted to clear a couple of things up. I have a slight problem with cynao and have for some time. there is a couple of places in the tank that have ares of cynao, and from the sounds of other peoples posts they have to. assuming no3 and po4 are fine. So the main food source for cynao is not PO4 but nitrogen, which they uptake directly from the water. bulbs may be old and need to be changed to eliminate the spectra that are undesirable in terms of their effect on Cyanobacterial growth in general. (just changed bulbs) carbon dioxide is required, and it can come from two sources decay of organic material (nitrate - nitrogen?) bicarbonates in the water The later is interesting, can anyone go into more detail why this is a problem? Not really any specific questions just wanting to get other peoples views, and yes i have read the links in the sticky above, very usefull. Don't want to hijack puttputts thread Quote Link to comment Share on other sites More sharing options...
puttputt Posted August 14, 2006 Report Share Posted August 14, 2006 feel free TM. Quote Link to comment Share on other sites More sharing options...
lduncan Posted August 14, 2006 Report Share Posted August 14, 2006 So the main food source for cynao is not PO4 but nitrogen, which they uptake directly from the water. But you have absolutely no control over nitrogen availability when 80% of the atmosphere is made up of it. It is near impossible to make it limiting to most cyano. That's why the focus on phosphate. You can make phosphate low enough in proportion to nitrogen to stop it's growth. Redfield ratio stuff again. carbon dioxide is required, and it can come from two sources decay of organic material (nitrate - nitrogen?) bicarbonates in the water The later is interesting, can anyone go into more detail why this is a problem? I wouldn't think it would be a problem, considering the quantities of bicarbonate in saltwater. Layton Quote Link to comment Share on other sites More sharing options...
TM Posted August 14, 2006 Author Report Share Posted August 14, 2006 But you have absolutely no control over nitrogen availability when 80% of the atmosphere is made up of it. It is near impossible to make it limiting to most cyano. That's why the focus on phosphate. You can make phosphate low enough in proportion to nitrogen to stop it's growth. Redfield ratio stuff again. I wouldn't think it would be a problem, considering the quantities of bicarbonate in saltwater. Layton so what would the key things be if you wanted to get rid of cynao. Reduce po4 make sure bulbs are not to old water flow anything else??? do you have a link to the Redfield ratio stuff you say you don't have any control over nitrogen availibilty but then is nitrate not being changed to nitroge on a daily basis, meaning another solution could be to reduce this eg reduce your fish load??? Quote Link to comment Share on other sites More sharing options...
lduncan Posted August 14, 2006 Report Share Posted August 14, 2006 so what would the key things be if you wanted to get rid of cynao. Reduce po4 make sure bulbs are not to old water flow anything else??? Not sure how much effect bulbs have. But flow is the big one, and not letting detritus build up in areas of rock. do you have a link to the Redfield ratio stuff This is the basic idea behind it: http://www.xs4all.nl/~buddendo/aquarium ... ld_eng.htm you say you don't have any control over nitrogen availibilty but then is nitrate not being changed to nitroge on a daily basis, meaning another solution could be to reduce this eg reduce your fish load??? The thing is, is that they for the most part can take nitrogen gas which is dissolved in the water and use it. There is no way you can stop this nitrogen dissolving into the water from the atmosphere. They always have a large source of nitrogen, fish or no fish. Quote Link to comment Share on other sites More sharing options...
reef Posted August 14, 2006 Report Share Posted August 14, 2006 What i believe is that cyno is a sign of nutrient buildup. it your case it could be from overfeeding or high tank load.. too many fish. i am sure mr trigger eats and shits heaps You might need a quality skimmer. I sometimes get some cyno in my sump from all the frozen foods i feed as i have to feed heaps to keep the anthias alive. Quote Link to comment Share on other sites More sharing options...
TM Posted August 14, 2006 Author Report Share Posted August 14, 2006 What i believe is that cyno is a sign of nutrient buildup. it your case it could be from overfeeding or high tank load.. too many fish. i am sure mr trigger eats and shits heaps You might need a quality skimmer. I sometimes get some cyno in my sump from all the frozen foods i feed as i have to feed heaps to keep the anthias alive. yes trigger tang and rabbit shit heaps and they eat a lot to, funny that. Quality skimmer, i do nutrient build up, yeah, maybe the probio is not working Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted August 14, 2006 Report Share Posted August 14, 2006 ASW???? Quote Link to comment Share on other sites More sharing options...
TM Posted August 14, 2006 Author Report Share Posted August 14, 2006 ASW???? have you seen the state of our beach down here. the sh*t ponds flow right out past sumner. Quote Link to comment Share on other sites More sharing options...
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