Dosing for trumpet coral

[Coldnhot81]

I have several colonies of trumpet corals they do great as long as I keep up with every other week water changes. If I try to go three or four weeks without a water change I get some polyps that start deflating even though cal alk mag ph po4 and nitrates are all in range and steady. Once I do a water change they blow back up.Is there something I can dose to keep them happy without so many water changes I would like to just do monthly water changes and dose accordingly in between.

 

[chaudhry]

Feed them when their tentacles are out at night. I have a no water change tank and they are doing great with feeding alone.


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[AlSimmons]

Water changes alone might be able to keep up with the current Calcium demand, but the more corals you add to the tank the demand will go up and you'll probably have to dose. If you haven't already you might want to get yourself some test kits, Alkalinty, Calcium & Magnesium being the most crucial. Find out where your tank stands from week to week and go from there.