I have a 55 gallon with planted 24/7 light. The light is in 24/7 mode on a timer on at 6a.m off a midnight. I use floramax substrate and it's fairly heavily planted. I have 5 amazon swords, 2 Ruben swords, java fern, two different types of annbius, 3 different types of crypts, rotala indica, foxtail,tiger lotus, and a bannana plant and also dwarf sag. I've tried seachem dosing chart, but when I did I started getting GSA. I completely stopped dosing the tank and the algae cleared up. The plants are doing fairly well, but they do show some nutrient deficiency. My question is I really wanted some info on dry ferts and where to buy them??? I'm not using co2 by the way.