Re: Air agitation or pump?
The aquarium circulation pumps will work for a while if designed for salt water but not worth the hassle or money. I started with aeration. It needs to be fairly aggressive. Use larger bubbles to cut down mist problems. Pressure will vary with size and length of plumbing. Caswell has a new pump filter that I've heard works very nice. I don't know how large a tank they are good for. When I upgraded to a 20 gal. tank, I went to a 3-MD-HC pump at 720 GPH. Agitation is much better than aeration. What size tank are you running and have you thought of maybe going to a larger tank later?
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