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Is my canister dying?


al4n

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Hello all,

I have a Hydor Prime 20 canister for about 12 months working sweet until recently. The flow rate of my canister has been gradually getting lower and lower. I have cleaned the intake and dismantle the canister to check if there is a blockage in propeller but to no avail.

What else could it be? Nothing has changed in the past 6 months. To give you an idea the flow use to be a 10 now it' between 2-3.

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Occasionally my eheim behave the same, but a little shake and wobble to release any trapped air pockets would get the flow rate back to normal. Otherwise, check the actual impeller, is it clean and still has it's magnetism ?

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Yeah, as BB mentioned, definitely check the impeller. If you haven't already done so, take it out and clean the magnet, and all of the impeller. All the gunk that builds up on it, adds to the drag as it spins. Also, thoroughly clean all the hoses from the gunk.

Has your media blocked up? i.e Has your fine filter floss become full of muck, because that will definitely kill the flow rate as well.

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Thanks for the replies,

I have check the impeller and gave it a clean, checked the media. but still flow issues.

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i actually increased my flow by 25% 2 days ago accidentally lol, just changed the filter wool in the canister :)

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Quick update:

Good news

Changed the filter wool for new and the flow is back to 100% Woohoo!

Bad news

During the whole ordeal i have lost dozen CRS :(

Thanks for input guys!

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Great, I always thoroughly clean, rinse, and squeeze the filter wool, but just rinse off the filter media with tank water.

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Good that the issue is resolved. I usually replace 80% of the filter wool when I clean my canisters. I leave 20% to help reseed the new wool. Having said that, the filter wool doesn't make up a large component of my filter media.

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That's great news, I always replace all the filter wool, completely clean the sponges & only clean one of the baskets of media. This allows for maximum biological growth while still having enough bacteria left in the filter to seed the rest of the filter :victorious:

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