Iv been thinking about trying zeovit interested to here what 180gal feeds his tank. I might not have enough food in the water also. I can get a mili out of my buddy's tank with extreme poylp extension and a few weeks in my tank and I have minimum extension idk he dose feed his tank Cyclops and oyster fest an I don't could be the issue
Be sure you check for pests, they eat and irritate your corals, causing them to retract. Also if you have angelfish in your tank that might be nipping at the corals, then you might want to remove them. HTH
Pohl's Coral vitalizer is what I use, then I dose either seachem fuel or oyster feast or rotifeast depending on the day. I do not see any increase in nitrates or phosphates but I would say that is due to me doing 40g water changes everyother week. So if you dont do much water changes I would take it easy on your dosing. On the pohls it is expensive ($40 for a very small bottle) but if you have a small tank you wont use very much.