i got 6 stem java fern medium size, bunch christmass moss and java moss in 12gallon tank with ada substrate. fish 6 juvenile corycat. i been try the fluorish excel and dosing 1ml but next day i saw my java fern looks melt, then i stop fews day later it looks ok and not smooth like after the excel. Question is do i need any other special fertilizer, i cant use excel right after it done to my java fern. If im gonna add rooted plant next time, do i need a root tabs like diy osmocote plus?