Any leaky canisters question

tks4d2

AC Members
Aug 10, 2006
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I'm thinking about setting up a 75-80 gallon tank with a canister filter,but I'm worried about how they might leak because I have hardwood flooring. What's the possibility of a canister leaking on me (eheim, xp3) Opinions would be appreciated!
 
I've never had a leak problem with my Eheim. (And I know why you're worried; I have hardwood floors, too.)

One thing you can do to give yourself additional piece of mind with a canister filter setup is to drill a small hole in the intake bar 1-2 inches below your regular water level. If the filter ever should leak, the intake line would lose its siphon once the water level in the tank fell to the level of that hole, so you wouldn't end up with half the tank water drained out onto the floor. (The downside is that you would need to reprime the intake line after each major water change, but that's a small price to pay for peace of mind.)
 
No leaks here, Mag 350, has been running for about a year.....:)
 
(The downside is that you would need to reprime the intake line after each major water change, but that's a small price to pay for peace of mind.)

Not if you close the valves & shut the pump off during the PWC... you'll just get one med/large bubble through.
 
My Eheim Pro II has been running continuously for about three years now and has never leaked. {Jinx} It squirts a bit when I disconnect the hoses but nothing a paper towel can't handle.
 
I have an Eheim 2126 Pro II for my Malawi Cichlid tank for the last 3.5 yrs. Recently, it leaked while I was doing some electrical work in the house when I turned the power off. I have hardwood floor and it must have spilled a pint of water before I realized that it was leaking.

Apparently what had happened was the o-ring seal on the canister wasn't holding the water in when power was cut. The filter was in a cabinet underneath the tank, and when the filter isn't running, the water pressure from the inlet and outlet hoses would create enough force to leak water out of the canister. This wouldn't happen when the filter is running normally (since the pressure is balanced), but once you cut power, the pressure is no longer balanced.

Lesson learned: keep the seal in good shape, and put the canister filter inside of a waterproof bin as a backup! Nevertheless the Eheim is a fine filter, absolutely quiet, and works well otherwise.
 
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