Best way to clean MTS capped with blasting sand
I've been gone for quite a spell and just recently got back home. Tanks are in very bad shape.
I can pretty much clean up all the tanks except one. Need some good advice on it. It is MTS capped with black diamond blasting sand. Most of the top is covered in mulm, debis, etc. I'm pretty sure the sand is fairly light in weight so vac'ing will be a challenge. I don't currently have any sand to replace.
Any idears on the best way to clean the surface?