i was wondering whether or not i am overstocking my tank? currently has 1 breeding pair of cons about 2 in, 1 2.5 in male con, 1 2.5in fenamle con, 2 3in firemouths both male, 2 3.5in male JD's, 1 1.5in tex, 1 1in gt, 1 3in jag, and a 4in pleco.. tank is a 135 with 2 penguin 350's and magnum 350. i do about a 40 gal water change every week.. ?????