I am planning on getting a 75 or 90 gallon to house my (currently tiny) "electric pink" jack dempsy, electric blue jack dempsy and adonis pleco. Would I be able to add anything else into either of those tank sizes with those 3 fish, or would the tank be fully stocked when they are full grown? I was thinking a school of 6 rainbowfish or something along those lines? I generally do daily water changes on my fish tanks, on a tank that size I would probably do a daily 5 gallon water change. Filtration would be a fluval 404 (have one in the basement) and an aquaclear 50 (also have on already). Not getting the tank for awhile yet but planning is half the fun 