so I went through with the whole leveling process. Shimmed the tank in about an hour this afternoon and kept using a level to make sure it was right on during the filling process. Left to right its perfect, front to back its slightly tilted forward but I think it will settle down a bit since the shims are in the back. Overall I am so glad that I redid the whole thing from emptying it out completely, removing all of the sand and then putting everything back in again
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