+1 on checking Nitrate and Phosphate.
How close are the mushrooms and leather corals to each other?
Leather corals in particular are known for chemical warfare.
If they are close, move them apart.
You can also start using Carbon to remove the warfare toxins.
Aggressive Carbon use could be a good way to test it.
But I would not recommend aggressive Carbon long term.
How close are the mushrooms and leather corals to each other?
Leather corals in particular are known for chemical warfare.
If they are close, move them apart.
You can also start using Carbon to remove the warfare toxins.
Aggressive Carbon use could be a good way to test it.
But I would not recommend aggressive Carbon long term.