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Re: Java fern deficiency

Java fern deficiency...?

I have some regular Java Fern that seems to have that problem. The new
growth is also coming out rather yellowish. Can anybody suggest what that
might be a diffiencency of? Nitrogen? Iron?

The transparent tips of growing java fern leaves is a normal condition, not
a deficiency.  the transparency is due to the absence of air in the middle
layer of the leaf.  As the leaf matures, the middle layer---cells between
upper and lower epidermis---fills with air.

Your guesses of nitrogen or iron seem to be on target.  Java fern is good
at getting its iron from the water column.  Just add some form of chelated
iron.  If you already are adding iron, check your nitrate levels.