Hey looking for some help in picking the pump for my sump.I have a 50 gallon display tank a 700 gph glass holes overflow the sump is a 29 gallon 3 chamber sump. From my measurements looks like 4 feet from the sump to the top of my dt.I have used the flow calculator but still not sure which pump to get ... What pumps are you using. Have you thought should have got the bigger one... Thanks Tim