Buy Cheap Eheim ECCO External Canister Filter 2236, Review This really is my very first month with the Ecco 2236 for my 55 Gallon Tank. I’ve a fully stocked shark tank and it keeps the water clean so lengthy as I siphon 25% from the water once a week.

I personal the Eheim Ecco External Canister Filter and use it having a medium size saltwater tank. It does a great job and only needs cleaned about once every 2-3 weeks and it is really simple to clean. It has very lengthy hoses so you can hide it out of sight which is truly nice. This unit is extremely quiet too. This is a very great system for the price.
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