Love those air pots for bloom. Here is an idea of the size plant a 3 gal airport can handle. Plant in the pic is only 3 wks into bloom and massive. Room has 16ft ceiling.
Flushing weekly or every other week is unnecessary.
Just make sure during feeding the plants are watered thru and you get around 10-20 % runoff from the bottom of the pot to avoid any nutrient lockouts.
Only times I flush during a run would be if the RO system unexpectedly takes a dump and I...
Haha those gavitas are kind of cheating. If you stand in that room with your eyes closed and imagine the sound from the fans as waves crashing you would swear you are at the beach.
A guy that I just started working with picked up this book. He told me he followed the techniques and pulled a little over 3lb per light.
I think he is full of it.