Overflow

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Hi all,
My tank is suddenly overflowing into my sump. I have reduced my pump down a setting and has stopped this. It had been running fine before. Whats causing it to overflow?

ajm83

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  • Tank Thread: https://reefbase.co.uk/members'-tanks-6/andy's-85l-nano/new/#new

Reply #1

crud/snail in the drain pipe?

Morgs

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Reply #2

Pipes are clear

semiroundel

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Reply #3

The tank is supposed to overflow into the sump, via a weir, do you not have that system? could you draw a pictorial diagram so we can get an idea of how it's rigged up?
Difficult to imagine whats happening there.
Being a plumber, I'll be suited to spotting a problem

Morgs

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Reply #4

The tank has an overflow into sump. I have pump feeding up to main tank. Return outlet pipe going into sump next to that it a pipe that sits higher (overflow) and if water rises to top overflows into sump. When pump is now turned down its fine as soon as turn it up the water in pipe chamber rises and causes it to overflow

ajm83

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Reply #5

does it have a valve to adjust the main drain? if so it may need cleaning or just adjusting,  mine does from time to time

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