Weaken Filter Flow and Cleaning External Filter (Canister) Tubes.

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eylk

AC Members
Aug 5, 2007
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Hello,

Am using a Eheim Classic External Canister Filter. I have black spots and patches (algae or mulm?) that run along the whole of both the hoses/pipes connecting to the filter and the In/Out valve.

Any suggestions on how to clean them? I think brushes can only do so much, it cant reach the middle area. Any chemicals I can dip them in? I was thinking of bleach but am afraid it will corrode the plastic and also affect the fishes when I replug it into the aquarium..

I notice the the filter doesnt quite 'suck' as much as it used too. Im guessing its because of the black spots on the pipes/hoses and also because I extended the length of those pipes/hoses. Any other causes I should be aware of ?

Thanks..
 
Last edited:

eylk

AC Members
Aug 5, 2007
265
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0
oh.. so i really do need to bleach it.. I was afraid maybe its a different type of plastic, and that it might get corroded.. haha but seems like those fears were unfounded...

Ok thanks !!

Any idea why the filter is least powerful?
 
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