Please Help !!!!

[Mr Green Fingers]

What size air pump you got bro, you want at least a litre per minute of air per litre of solution and I use 2 4 inch airstones in each bucket

 

[Mike20132]

What size air pump you got bro, you want at least a litre per minute of air per litre of solution and I use 2 4 inch airstones in each bucket

This cannot be overemphasized.. The larger/multiple airstones will produce more bubbles and by extension more surface area for the oxygen exchange.

 

[Mike20132]

This cannot be overemphasized.. The larger/multiple airstones will produce more bubbles and by extension more surface area for the oxygen exchange.

Also, keep the air pumps inside the tent. In theory the oxygen concentration in the air will be higher that close to the plants.