I trust my cannazym and rhizotonic to keep root rot at bay. Costly solution but that's just us.

Green,.....I called my hydro guy and he suggested that if trying to keep ph and nutes balanced in a 25 w/f setup hooked together to a central rez he'd up to the pump shown below. It's pretty strong so he also suggested placing a stop valve inside the main res in order to control the speed of flow/air power you would need.
Weedhound Reviewed by Weedhound on . GH WATERFARM USERS: SIMPLE RECIRCULATING SYSTEM Ok so I was at my hydro store yesterday and the BRAIN pulls out this kit from GH that makes your w/f set recirculating!! Ordinarily this isn't very exciting news EXCEPT...... Get ready.......:jointsmile: It uses an air pump and drip ring set up to move the water through the system. You do NOT NEED A WATER PUMP! Let me repeat that part: YOU DO NOT NEED A WATER PUMP. IT RUNS OFF A BASIC AIR PUMP. Rating: 5