C
csmith
Guest
I purchased a Mag Drive model 3 external pump today for my in-progress CO2 reactor. As it's going on a 20 gallon tank, and I already have good flow coming from my filter, I made the comment at my LFS when I bought it that I'd have to turn the flow down a bit with a ball valve due to my tank size (pump is rated at 350 gph, smallest they had). I was cautioned against doing this as it would somehow adversely affect the pump. How is turning down the flow on the pump a bad thing for it, but my filter can be turned all the way down and not be affected the same way?