Als

Ic. I plan to use 2500 liter/hour pump but at 140 cm head, it'll give around 1000 liter/hour (according to its graphic). For the safe side, I'd better try at least 20 mm pipe then so my sump is never empty and the main tank never gets flooded. Thx a lot!

Hi, Please advise what pipe size and pump capacity that I should use for my tank? 1. It's 120 x 50 x 50 cm (300 liter) 2. The height between the top of the aquarium and the base of the sump is about 140 cm TIA