Have a bit of an ant problem in my basement this year. Keep finding them in my sump. Cant find much information on them in a reef tank anywhere. I know they are full of formic acid which I assume is not good for the tank. Been doing 20 gallon water changes every week on my 90. Id say 70% of all coral seem unaffected, but the 30% mostly euphyllia, mushrooms and zoas aren't open as big as they normally are or have melted. Anyone have any experience with this issue and how did you solve the ant problem and the problem they caused in your tank? Starting to affect more and more everyday I look. TIA! PLEASE HELP!