12-16-2003, 07:53 AM
Join Date: Apr 2003
My personal experience with Crypts are they are slow to start, but once established, they grow rather quickly. That being said, the next thing is the amount of light they receive and the quality of the substrate.
I had a 75gal tank with potting soil and Flourite as the substrate and 4 40w T12 bulbs for lighting. Water was tap, hard in the low to mid 7's, GH was around 9-11 degrees and the KH was around 12-14 degrees. The Wendtii grew very nicely...tall and full, spreading moderately.
In a 55gal tank, I had the same Crypts, but the only difference was the lighting. I used 4 T8 overdriven bulbs...much more intensity. The water was RO/DI, with around 7pH while GH and KH were no more than a few degrees above 0. The Crypts grew much more compact with shorter leaves and a redder color.
Obviously, the Crypts did not have to reach for the light since the intensity was much more in the 55gal.
This is about the only way that I know of to change the growing habits of the Crypts. Of course your ferts and CO2 will play a part, but I belive the lighting is the main thing.
Be aware, that your other plants will grow differently as well under different lighting conditions.
All kind of obvious when you think about it.