t1mmbo, welcome to the pond boss forum, if you could post some photo's of your pond especially from the warmer months it would help some of the experts give you good advice.
Unless you've got cold springs supplying water to the pond it's probably too warm for trout being only 7 ft deep, but you could get a thermometer with temp. probe and monitor it for the summer then you would be sure.
Blocking off the connection to the other pond sure couldn't hurt if you want to put money and time into stocking it. I would suggest putting in some forage this year like golden shiners and fathead minnows and work on the weed and water problems, then after the summer you might have a better idea what type of predator fish would be best for your needs.
Good luck and hang on for more suggestions.
