Okay I'm new to aquariums but got into the saltwater hobby to share a common interest with my kids. We have a 55g and hob filter and not real happy with the clarity of the water. Read about the benefits of a in-stand filter, so we just got a used wet/dry filter. I hear bad things about bio balls so I think I'm going to remove the balls and add live rock instead and I think then it would be called a sump instead of wet/dry filter. Seems his is preferred if you have fish and corals. Any info you can provide will be appreciated.
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