CorvetteManZO6
02/27/2008, 04:43 PM
I have recently just recived a new 18 watt turbo twist from a friend for my 29 gallon bio cube. I know its a little over kill but what can i say it was free. The pump powering it is a quit one 1200 pump that puts out 296 gph. The question is I only leave the uv runing for 10 to 12 hours a day. What should I leave the flow at meaing how many gph to make the uv work at its best perfomance???