Now that plant got bigger not because of the airpot totally. I used a heavy nutrient load. Advanced Nutrients Sensi Grow/Bloom A+B, Advanced Nutrients Big Bud, Bud Candy. Also use Botanicare Cal-Mag and Superthrive (a friend gave it to me, I'm not convinced it works but it was free). I pump as much as I can of those into my plants then last week or so I flush. Being that usually with airpots I have to water everyday towards the end I find flushing for one week is just fine so basically it gets a daily flush of just water.