I havent had a freshwater tank in years, moved over to salwater reef only, aggressive only, and even a pico 2.5gal desk coral tank. Any question with that stuff i got it. Had lion fish, eels, anemones with breeding clown fish , LPS coral, SPS, crazy exp lights and skimmers, you name it i had it. <-money pit!!
From what I remember though the red tails are semi aggressive, however as long as they are the only "shark" in the tank and as long as the other fish are about the same size you will have no issues.
Are you set on the 55gal? Just from my experience I hate the 55 dimensions. I'm assume you going to have some sort of driftwood and some plantlife in the tank? If so the lack of depth (IIRC its 12-13") which doesnt give you much of a foot print to work with. Harder to to clean as a result of being crampt with any sort of decorations. Also the min for those sharks is the 50gal, why not just go bigger with atleast a 75 (IIRC 16-18" deep) or the perfect 90. Craigslist will have a ton of tanks for sale for a fraction of what they cost new also.
Last edited by usp55; 08-09-2011 at 10:29 AM.
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