What is needed to grow water hyacinth in an aquarium? It's a 55g, 160w (1 normal 40w, 1 chroma 50, and 2 GE plant bulbs). It's CO2 injected, but that shouldn't matter. There are usually no fewer than 50 feeder guppies, plus the bullhead catfish..so enough waste is being produced. Any information would be nice.