Planted Tank Enthusiast
Join Date: Dec 2009
Location: Los Angeles, CA
For Eheim canister filter users ... how often do you replace the substrat media ?
I do not use it at all. I only use lava rock. I do so to allow better flow as I do fill it all the way but only 2/3
I also cut my own filter pads and use a finishing cloth on top I clean my filters in rotation and do one wach week. I have four tanks. The rock is cheap, so if I replace some I'll only change out about a third
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