Water flow back to sump tank

[marlim]

Anyone know how to stop water return back to sump tank when pump not working? Any idea for DIY bro...

[Sapp]

Eh... Bro... if return pump not working, there should be no more water flowing down to your sump. Unless you dun have a overflow system and you are running 2 pumps. 1 pump water from main tank to sump and the other pump from sump back to main tank. If that is your case, you can try using a float switch to control both pumps.

[Terryz_]

There will be a back flow through your return from your main tank when the return pump dies...

Just drill a hole just below your water level, when the pump dies, the water level will drop to the hole and start ###### air in and the backflow will stop..

[peong]

Just add a "non-return valve" to your return pump will do, if pls need it i hv one.

[marlim]

Thanks alot guys.... I appreciate that:D

[Homer]

There will be a back flow through your return from your main tank when the return pump dies...

Just drill a hole just below your water level, when the pump dies, the water level will drop to the hole and start ###### air in and the backflow will stop..

this is the best and cheapest way...

[Alvin Tan]

no hand drill...just take a test pen, heat the tip up on fire for 1min....when its hot...jus squeeze it into the pipe and there is a hole readily for u...

after that, throw away the test pen because most likely will be condemn...

[Ah-lim]

this is the best and cheapest way...

Is this the way?

Thanks.

[yozzer]

NO! The hole goes just below the surface of the MAIN tank water level. If you put the hole in the sump pipe then you will get back flow until the main tank water reaches the lowest level of your pipe and probably flood your sump area!