Has anyone recommended AquaClear yet? 
I've got 5 AC110's on various tanks. Only HOB I'd use. Run them all with the sponges and fill the rest with Biomax. No need for the carbon unless you are removing medication.

I've got 5 AC110's on various tanks. Only HOB I'd use. Run them all with the sponges and fill the rest with Biomax. No need for the carbon unless you are removing medication.