I've figured out the issues in my tank. It's been a long 8 months of steady death with parameters being super stable and a recent icp tests and separate water testing facility has nailed down tin copper and aluminum in tropic marin reef pro salt. Bulk reef has known about this and tropic marin has also. I urge you to look at your buckets. Batch numbers will be issuing soon on bad batches. This is very bad. Class action lawsuit started by another member. I'll keep you all posted. Bulk reef has known about this also.