My 1533 is growing good too, just a little behind my 1990 but the side vines are growing good as well. So far I’ve just been giving the plants, Neptune’s seaweed and fish, Wow 5-2 humic seaweed, Mykos, Azos, Versity, essential, and companion. Nothing to hot yet, I’ll start some 15-5-15 plant marvel pretty soon.