I recently got a spotted cory and an emerald cory and they are looking really good. but: 1. I'm not sure they are getting enough food. I feed my fish where there is a few flakes reaching the bottom, and I see the corys get a flake or two each day. So is this a problem that they only get a little food? should I invest in some food specifically for bottom dwellers? 2. Since I have a molly and platys, I salt my tank (not to the full tablespoon per 5 gallons). Will this harm the corys? Like i said, I don't do the full dose, i only do like a tablespoon for every ten gallons.