Clear leaves

My Java Ferns are starting to get clear tips. About 1/4 of the end of
the leaf is starting to turn clear on the newer leaves.

Also sections of the leaves are turning black, but are still growning.

I have several other plants in the tank growing well. Could the other
plants be stealing minerals away from the ferns? Root ans such look
healthy.

I have a DIY CO2 and fertalize with the standard pet store fertalizer.
(though CO2 has been having problems) 3- 40 W Bulbs on 70 gallons. No
special substrate. Do not do water changes as much as I should.

I dont think I have too much light. I think I have a mineral shortage.
What do I do to add more minerals? What mineral do I need.

Not looking to spend an excessive amount. I was thinking about getting
pond tabs and breaking them up.

Thanks,
Martin

In article . com,
Martin wrote:
My Java Ferns are starting to get clear tips. About 1/4 of the end of
the leaf is starting to turn clear on the newer leaves.

They do that.

--
Need Mercedes parts ? - http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
1970 280SE, 72 280SE | Home page: http://rs79.vrx.net
633CSi 250SE/C 300SD | http://aquaria.net http://killi.net

Really....

OK

Thanks

In article .com,
Martin wrote:
Really....

yeah, it's the sign of active growth tips. It's a problem when you
*don't* see it.


--
Need Mercedes parts ? - http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
1970 280SE, 72 280SE | Home page: http://rs79.vrx.net
633CSi 250SE/C 300SD | http://aquaria.net http://killi.net