canister filtres?
I have a few of my tanks with canister filtres and am toying with the idea of taking out all of the sponges, and miscellaneous media in the different trays and filling the trays with coral and rock fragments to act as the filtre.
I am looking at this cuz I am still struggling with high Nitrates.
Rumour is the sponges are a major cause of this.
Looking for some advice and opinions
thanks in advance
Neal
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Way too much time and money has gone into this hobby....and yet, I CAN'T STOP
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