This is more sharing experience rather than a question. 2 weeks ago I noticed my frogspawn and hammers not opening more than 1/4" off the skeleton after months of nice big pretty plump tenticals. I initially thought it was a decrease in nutrients. I did a "deep clean" and nitrates dropped to below 5. For the past year my phosphates have held steady below .50. I didn't think to check again. Tested phosphates this morning at 2.5. I'm guessing this is the issue. BUT, am open to any suggestions.