yea i use fiberglass along the seams. yea the resin went on fist and then sweetwater second. i just need ideas on how to fill in those little leaks in the back. i still got a gallon of sweetwater left but i dont need all one gallon so i just need help on how to re-seal it with a something else or just a small amount of sweetwater....
I don't think I read your first post in this thread close enough. Are you saying it was sealed with 795 (after epoxy and Sweetwater) and leaked and then you added more 795 and it still leaked?
Sweetwater won't adhere to 795 but you could try to brush another coat on right up to the 795. Sweetwater is fairly thin compared to resin so some of it might wick behind the 795 if there is a poor bond anywhere.
If this fails I would resist the urge to slather on more 795. Instead I would take the time to remove all of the 795 and re-paint the inside of the tank again with the Sweetwater.
And if you do that I would also add a fillet of thickened epoxy resin along all of the interior seams and then paint over that.
Another option is to bridge over your 795 with epoxy and fiberglass cloth or maybe even with thickened epoxy if there isn't too much 795 on there. This might sound like the easier option but if it were me I'd take the time to remove all of the 795. But hopefully it won't even come to that.