I've used the Gregson Clark strainer bag that can hold a 50# bag of N as you melt it down for the spray tank. I'm noticing that my SOP has a decent amount of sand mixed with it from the mining process that the Gregson Clark bag cannot separate. This send ends up at the bottom of the spray tank and can clog the finer mesh strainer on the suction line. Does anyone know of a tighter weave/mesh/metal strainer that can fit inside the spray tank so the SOP can be dumped into that and melted down leaving only the sand behind? Thanks for any replies!