I have several of the Marineland HOB bio-wheel filters. I've noticed that a couple of them channel a little bit of water down the "overflow" channel even when the filter cartridges are removed. Is this normal?
What do people use in the extra media baskets?
I've been rinsing and reusing cartridges until they are worn and then replace with new ones. I've heard mention of using sponges instead. Any particular sponge that works well?
What do people use in the extra media baskets?
I've been rinsing and reusing cartridges until they are worn and then replace with new ones. I've heard mention of using sponges instead. Any particular sponge that works well?