you cant go wrong with API...... I would be more worried about actual conditions the plants like in nature compatible with your water than the amount of fertilizer. Im not very good with aquatic plants, but im good with the kind you put in your garden or house, and I can tell you that fertilizer is not 100% necessary at all times, and also, that plants will stress and drop leaves from previous growth and put out new set of leaves that is more adapted to the new conditions the plant/tree finds itself in after the stress is over. You live in florida, you should get my point.