I have an Acropora colony that is showing signs of STN from the base up. I have heard this is due primarily to either a lack of flow around the base, and/or lack of alkalinity. I am sure it is not my alkalinity, as everything else is doing awesome in my tank. I suppose it is probably a lack of water flow around the base, however I did have an Acropora piece there before, and it did pretty well until I got rid of it.
So, my question is ... if the tissue recession is due to a lack of flow, will the tissue recession continue up the colony until the entire colony is dead? Or will only the base lose tissue?
So, my question is ... if the tissue recession is due to a lack of flow, will the tissue recession continue up the colony until the entire colony is dead? Or will only the base lose tissue?