sen5241b August 30, 2018 Share August 30, 2018 Some months ago I had a nitrate/phosphate spike and my zoas closed completely. I resolved the trate issue months ago but the zoas never fully reopened. Currently phosphates .01 and nitrates a 1 or 2 ppm. The zoas are reaching up stem-like towards the light even though they are getting at least 100 PAR. These same zoas grew like wild fire under metal halides. Anyone had this problem? Link to comment Share on other sites More sharing options...
madweazl August 31, 2018 Share August 31, 2018 I would expect the polyp to open wider if was wanting more light and the reverse if it were getting too much light (self shading by closing up). Link to comment Share on other sites More sharing options...
smokythemattman@gmail.com August 31, 2018 Share August 31, 2018 (edited) I can only speak for my zoas. I have like 20 kinds and all of them except for 2 act this way. If I move them or something changes they are grumpy and weird. Closed, raised etc. If I just let them be usually after a few weeks they are fine and return to normal. It seems as though mine are no where near death they just take a while to acclimate to slight changes. Zoas are a mystery to most. Also as far as opening and colors mine prefer a dirtier tank. Nitrates around 10ppm to 12 ppm ish. And phos at like .05-.08. My guess is yours are just adjusting and if their anything like mine that can take a while... Edited August 31, 2018 by smokythemattman@gmail.com Link to comment Share on other sites More sharing options...
sen5241b August 31, 2018 Author Share August 31, 2018 I can only speak for my zoas. I have like 20 kinds and all of them except for 2 act this way. If I move them or something changes they are grumpy and weird. Closed, raised etc. If I just let them be usually after a few weeks they are fine and return to normal. It seems as though mine are no where near death they just take a while to acclimate to slight changes. Zoas are a mystery to most. True. I read a dozen forums on closed zoas and, ruling out pests and high 'trates, there doesn't seem to be any common cause or pattern to it. Link to comment Share on other sites More sharing options...
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