Posted: 9/2/2013 from LOUISBURG, NC UNITED STATES
I have a 550 phosphate reactor on my 125 gal aquarium.It is made by two little fishes. The reactor sponges last a good while but you will have to replace them. So I order two more from marine depot ,they are the same exact quality when I bought the 550 reactor.you can't ask for better quality than that. Thank you marine depot ps, see u soon
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