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View Full Version : Why is there a ball in my canister inlet filter



Bad Inferno
Mon Jun 12, 2006, 01:13 AM
I have a fluval 404 and it comes with a "plastic grate filter" you place on the canister inlet tube inside the tank. This has a ball within the housing and acts as a one-way-valve.

I have just taken this off, drilled a series of holes in my tube and put a sponge over it. This was due to me getting a lot of junk tangled around my inline pH & conductivity probes which is inline with my canister inlet tube.

Why do fluval include this one way ball ? The only thing I could think of was in a power fail you may end up with a reverse flow through your filter, I doubt it though ?

rob

kalebjarrod
Mon Jun 12, 2006, 10:19 AM
most quality pumps come attached with a one way valve or what is knw as a foot valve

it helps in stopping pumps from lossing there "prime"

:wink: