power failure, sump tank overflow

hi to all bros

pardon my noob-ness, i recently acquired a N30 322 cab sump tank (typical overflow and underflow with sump abt 2.5ft) fr a friendly bro here.

as this is my first time owning a cab sump tank, i was toying the event of power failure what will happen to my tank. basis my several experiments done during this exercise, i found that the sump tank will be overflowed in the event of power failure.

is this how it should be, or am i setting it up wrongly, or is there any solution to this?

thanks in advance for all contributions.

[Weiliang]

Originally Posted by silent_panda

hi to all bros

pardon my noob-ness, i recently acquired a N30 322 cab sump tank (typical overflow and underflow with sump abt 2.5ft) fr a friendly bro here.

as this is my first time owning a cab sump tank, i was toying the event of power failure what will happen to my tank. basis my several experiments done during this exercise, i found that the sump tank will be overflowed in the event of power failure.

is this how it should be, or am i setting it up wrongly, or is there any solution to this?

thanks in advance for all contributions.

Is the outlet of return pipe from sump to main tank underwater?
Sometimes the if this is the case, when pump stops water will back flow via return pipe, siphon effect.

yes, i have a rainbar at the bottom of my main tank, the return pipe is connected to my eheim pump.

so does that mean that if i remove the rainbar and have my outlet pipe at the top of the the main tank i wont have this problem?

[atan]

Originally Posted by silent_panda

yes, i have a rainbar at the bottom of my main tank, the return pipe is connected to my eheim pump.

so does that mean that if i remove the rainbar and have my outlet pipe at the top of the the main tank i wont have this problem?

Yes, if the outlet pipe is at the top.

Alternatively, install an anti-back flow valve.

You should have a hole drilled near the end of the outlet pipe to ensure there is no back flow.

[G2Red]

Originally Posted by atan

Yes, if the outlet pipe is at the top.

Alternatively, install an anti-back flow valve.

I think this is a good idea...to install a non-return valve...

[atan]

Originally Posted by atan

Yes, if the outlet pipe is at the top.

Alternatively, install an anti-back flow valve.

Anyway, to that someone who commented "kiang Tio ho Mai Ke kiang la" and never see big snake shitting. This is the anti back flow valve and so called "y" valve I'm talking about.



And TS, you can get sgbros to install for you.

[AlvinLeong]

A small hole drill on the return pipe in the main tank just around the water level will do. It will break the siphon effect when you off your return pump.

[davidw]

Originally Posted by AlvinLeong

A small hole drill on the return pipe in the main tank just around the water level will do. It will break the siphon effect when you off your return pump.

agree....

http://arofanatics.com/forums/showth...venturi&page=5

Originally Posted by atan

Yes, if the outlet pipe is at the top.

Alternatively, install an anti-back flow valve.

Originally Posted by spgohjc

You should have a hole drilled near the end of the outlet pipe to ensure there is no back flow.

Originally Posted by G2Red

I think this is a good idea...to install a non-return valve...

Originally Posted by atan

Anyway, to that someone who commented "kiang Tio ho Mai Ke kiang la" and never see big snake shitting. This is the anti back flow valve and so called "y" valve I'm talking about.



And TS, you can get sgbros to install for you.

Originally Posted by AlvinLeong

A small hole drill on the return pipe in the main tank just around the water level will do. It will break the siphon effect when you off your return pump.

Originally Posted by davidw

agree....

http://arofanatics.com/forums/showth...venturi&page=5

tx vm to all of you for answering to my issue. then comes my next qn, with my tank aldy running, whic of 1 of the 2 alt will be easiest to execute? and wud any1 knows how much it will cost to hv the y-valve installed? tx