I have some Floruish liquid fert just sitting here and wondered if I could use it, it has a very small amount of Copper in it which I know can be bad for inverts, and my bottom is dominated by amanos, cherries, and ghosts which I dont want harmed. Its a CO2 injected tank, so its no huge deal, but since I had it I wondered if it could be used. Also have a bottle of iron, is that lethal to inverts?
