Would like to know what test kit for Calcium is worthwhile and how much $$ will it set me back?
Also, candy cane coral seems to shrivel up when MH
go off (actinics still on) at night. In the past they would put out tentacles to feed when the lights went out. Now they shrivel up at night as if they were about to die. Next day, when the MH
come back on they are all puffed out and looking great. Any thoughts would be great.