Interesting Magnesium Observation

[christyf5]

I vote for the elevated sulphates. Epsom salts have been reported to be a good way of a "one time" increase in magnesium levels but repeatedly doing waterchanges containing epsom salts increases your sulphate concentration which isn't exported. I would imagine its having an effect on the more primitive critters which don't have the systems to deal with it.

[littlesilvermax]

I also vote for the elevated sulphates, although I don't really know.

[Sebae again]

I've heard of people increasing their mg to those levels to kill flatworms so maybe it has the same effect on BBS. Since I've added a CPR hang on fuge to my tank,I've never had hair algae in the tank. It only grows in the fuge for some strange reason and this has been with 2 tanks over a 3 year period supporting a large fish load.