It was built out of scrap plywood fibeglass resin and a multy purpose nsf approved marine paint turns out there is only one way to do it with this material when apllying a coat you can't stop you have to cover the entire area you paint otherwise......flaking.
The outside of the tank i had to coat an area wait for it to dry then flip it around the areas where i stopped it started to flake but the inside of the tank worked out.
The tank has been threw a water test and i am now working on the visual side of thing's.