How long has this tank been set up? And how much light do you have over it?
See this page for three possible explanations of your problem:

http://www.fortunecity.com/lavender/.../881/dying.htm

I attach a picture of some new ones I just added. A few days later the
leaves all had holes in them. What can I do to rectify this? I have always
used properly conditioned tap water - is it time to switch to RO?

No. There's nothing wrong with your GH. Contrary to popular belief, plants
actually like hard water.

Heck, Chuck, if you're reading this thread -- I think a great new article for
your site would be your post from last year about the AGA conference, about
plants and hard water.


Leigh

http://www.fortunecity.com/lavender/halloween/881/