I just set up a NPT on the weekend. It's doing really well except for 1 death. I heard you need to airate the soil? How should I do so? It is a 5.5 gallon with inaescent lights, a 50w hagen heater, a topfin 10 filter (used in a KK for a month or so), and I used top soil capped with a bag and a half of gravel. The plants in there are moneywort, water wisteria, and hornwort. All from petsmart. And one more question, my horn wort won't float properly, it kind of half sinks. LOL I have put it into like a mini bush beween the moneywort and wisteria. Is there any way to make it float?