LOL I didn't want to take up peoples time explaining what it was. This won't help much but I am making a small plankton farm that will fit in my garage. For What? To feed my corals and fish in a sale water reef tank.
Tank you for another thing to considerate. It sounds like that might have a lot to do with it.
Now back to the questions.
Would a 5A adapter help things.
And should I buy the same sized motor, go bigger or go smaller?