the importance of drilling your tank

[LoneStar]

let me rephrase this, if you have a high volume return pump and it pumps in more water than the siphon takes out and you "rig it" with 3 siphon (j tubes) just to keep up with the pump but you have one j tube siphoning straight into the sump and not into the external portion of the overflow box.....yeah, don't do that.

Throttle the pump down with a valve to reduce the flow.

[rz1a]

oh yeah, my pump also puts back way too much water. i put a T after the pump and have the water going back to the beginning of the sump and the other going to the tank. they both have a valve on the lines

[captexas]

And it didn't overflow like that when you tested it after setting it up? Or was it never tested?

The problem of having too strong a return pump will be an issue even if you had your tank drilled. Overflows, whether hang-on or drilled, can only handle so much water based on their size.

[caferacermike]

And it didn't overflow like that when you tested it after setting it up? Or was it never tested?

The problem of having too strong a return pump will be an issue even if you had your tank drilled. Overflows, whether hang-on or drilled, can only handle so much water based on their size.

Cheers to that.

As well as RZA, I also have my return pump set up with a tee and a valve to create a recirculation loop in the pumps chamber. That way I can throttle back the return without worry of putting pressure on the pump.

[rz1a]

yeah my pump is way too big. if i had the pump without a T it would definitely flood my room. i didnt want to see how long the overflow box could keep up with the pump so i went and bought the T and its worked great so far. i can control the amount of water going into the tank and the rest just goes back to the first compartment in the sump where the skimmer is