Are you talking for actual fish aquariums, or reptile enclosures of aquariums?
If fish aquariums, using distilled water in them is not the best idea. It's lacking in the minerals, etc. that the fish need from it.
If we're talking enclosures for herps, distilled water in the water dish should be fine. Vinegar will clean off the outside/inside. You can use cleaning substances but, the reptile needs to be out ( fumes ) and the tank will need to be rinsed thoroughly before allowing the reptile back in.
Chris ( aka bichiraddict )