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Re: Java Fern melt
Karen and others have commented on the Java Fern melt. Here are my 2 cents
In a neglected tank, one or more nutrients tend to become limited. This
would lead to decreased O2 levels from lower photosynthesis production and
perhaps increased demand from decaying processes.
Adding the missing nutrients, KNO3 in Karen's case, Ca in others, may bring
up the O2 level again.
Since Java Fern is really an amphibious plant, it may just be that it reacts
to long-term, low O2 levels in the water.
"As if you could kill time without injuring eternity." Unknown