hey kali i havent heard of it or them but i gotta ask if by chance if its a recirculating dwc set up with a res & pump to keep things moving ??? i use 2 pumps in my e&f res 1 to flood & the other to circulate my nutes when i did my bubbleponic grow i took tubes off & once roots reached the nutes they say pump raises res. temps but the way i do things now nutes dont hang out in res. very long ie, drain to waste. i like to study all techniques keep me posted good to hear from ya by the way, posted p/c grow in grow-journal forum drop on in