Since you have that much sand - personally I wouldn't get raid of - since it a prefectly good sand for reef tanks or FOWLR tanks that don't have any elasmobranches(sharks or rays) in them.
Instead just get another tank for the shark. Or remove the sand from that tank, and replace it with a finer grade of sand.
Instead just get another tank for the shark. Or remove the sand from that tank, and replace it with a finer grade of sand.