As previously posted, I'd make sure the tank was "clean" before dedicating 2 largemouths to it. Whatever your JD has may be on your filter media, your substrate, everywhere else in the tank.
ok thanks guys oh and its only a 4-5 inch JD i think he's ok in a 38
oh and if i do get them on flakes and pellets will they still be able to have live foods every now and then?
im also looking into getting atleast one LMB once i get my 55gal up and running, should be a cool fish to own. i dont think raising a LMB would be much different then raising any other fresh water predator. give them a good clean place to live, plenty of food, and some tank mates that wont become food.
Your going to need something quite a bit bigger than a 55, so hopefully you've got something planned. They are great fish, very hardy and interesting pets.