aquarium project.

CA glue will not harm the tank and let the paint cure for a month. Check out reefcentral.com from one reefer to another, good luck.

All through the '80's I had 2) fifty gallon tanks, 1) twenty gallon, 1) ten gallon and 1) five gallon (all fresh water), aquariums going. I took a small (about 4" long) 3-masted sailing ship model, (was molded in white plastic) built it. Cut a hole low in the hull. And broke the masts and cross bars in a couple of places, and glued them on the deck as though it had been sunk for years. I placed a few pennies inside the hull to hold it down. And for several years had no problems at all with it bothering the fish. Course I had NOT painted mine (after all if it had been sunk for years the paint would be gone anyway). After a couple of weeks the algae turned it a nice green, and it looked real good. I don't know if the paint would cause any problems or not, (I wouldn't take the chance myself) but I know the glue and plastic didn't cause any harm. I would wait a couple of weeks before I put it in the tank just to make sure the glue is fully cured. Kasy

That Flower is quite impressive. It's in fresh water, which is less harsh than a marine environment (even an aquarium one) not to mention the fact if you kill off a couple of 50 cent neon tetras you'll feel bad but if you kill off a $75 Angel you'll feel REAL bad. I'd still advise against it.
Gary

i would think it would harm the fish

Have a look here:
http://www.msc-hansgrade.de/britischerubootjaegerwrack.htm

I'd be more concerned with the livestock in your salt water aquarium being affected by chemicals released from the plastic, paint, or glues as they cure.

Any sort of lacquer or enamel based clear coat shouldn't be effected by salt water. I would paint the model with nothing but enamels or lacquers just to be sure.

Jeff