just something i recently found out for myself.

i use to think that the filter was ment to suck and trap the fish dirts.when infact its better if they just filter water!
by fitting a sponge over the out pipe this will prevent dirts entering the filter and only let water through ,it also prevents outlet strainer clogging and it has a greater surface area. this sponge(PRE-FILTER) can be removed and cleaned very easy . plant leaves and un eaten food rotting in a canister filter will only add to the poluting of your tank. its much better to remove the fish dirts/plant matter/un eaten food through syphoning!

happy reasearching Robert.

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