pump queation please answer

okay so i have a 55 gallon tank that i going to be putting a sump/refugium on! im going to have a 20 gal long for refugium with skimmer and refugium and what not! i have a diy overflow with 1 inch pvc pipe! i was wondering what gph pump i should get to pump it back up to the aquarium! itll be pumping the water about 5 feet back up to the tank with no elbows except at the top to go into the tank! i was thinking about a 800 gph and getting a ball valve and putting that on and fine adjusting! any information could help! thankyou

 

Using a ball valve on the return line is a good idea.I can't really recommend a pump size but it might be good to go large that way you can also use it to feed a reactor or two if you would like.I use a pump rated at 560gph even though my overflow is rated at 300gph.The pump also feeds my biopellet reactor and both lines are throttled back using ball valves,works fine.

 

Yep, as said, go a little bigger, throttle/valve it back some so you have some reserves.
Remember, usually the gph is at 0 head. Unless you already have the stats for your head height.
Contrary to often misinformed information,
Valving just about any pump made today back some actually SAVES energy, and is EASIER on the pump.