Fill the net pot full the roots will grow down to the water. Keep the bucket full within a 2-3 inches of the bottom of the net pot splash from your air pump will keep things hydrated. AN is good but it’s very expensive to use. I’ve used Dynagro with good success. Change your water once a week. And a good enzyme cleaner like Z7 will keep everything nice and clean. I run my ph between 5.8-6.2. Anything less than 5.8 you risk locking out calcium.