Originally Posted by Dav3
Wow. She doesn't know what she is talking about. That pump isn't even close. You probably have about 4' of vertical piping from return to tank. That pump won't break 200gph at that distance and you need to match 300gph on the overflow. Take the pump back and get the next size up. Then throttle it back some to match.
Agreed, Get the next larger pump. There wont be any need to throttle it back, it
will work fine
Most people create their own problems by not following the basics and refusing to stock appropriate to their system. Gregcoyote 2013
SPS = Stability Promotes Success