Warning :-)


Prolific Poster
Apr 4, 2005
I just finished a blackout to kill off remnants of BGA. The good news is it worked perfectly, my plants look great (they even grew) and the fish are fine, but hungry. A great success. However, when doing the WC, pruning and reset, I decided to get rid of my Hornwort. Of all the plants it was the only one that didn't fair well. It became brittle and broke into lots of parts. I removed it from the tank as I was cleaning and put it down the garbage disposal. Bad move. Hornwort is tough and clogged my kitchen drain and I cannot get it unclogged. Guess tomorrow is a trip for some Drano.......

Otheriwise, the balckout really works!


Guru Class Expert
Jan 24, 2005
Re: Warning :)

From your experience it is not clear that the black out was the cause of the brittle hornwort.

I personally believe that calcium is underrated when it comes to plant structure issues.