Is there something I need to test for apart from, Ammonia 0, Nitrite 0, Nitrate 2, Calcium 456, Magnesium 1430 ish, PH 8.13, salt 35 ppm, temp 78f, 300 gal tank but can't keep turbo snails alive, all my other snails do well and I have baby snails but turbo snails just die. :frusty: I get this...