12-19-2011, 07:47 PM
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Crypt melt can be triggered by any change in the tank. Water parameters changing by water change or difference I'm light. For intense being shaded by another plant when it wasn't before. Temp change can cause it also. There are many things that can cause it.
This is taken out of one of the crypt profiles we have here and I quote:
" Crypt Melt: All species in the Cryptocoryne genus require stable water parameters/conditions and light, and once planted, crypts should not be moved. It generally takes up to 30 days for a crypt to become established. Within a couple of days of any significant change in temperature, pH, hardness, light intensity or duration, nutrient availability or disturbance to the roots by moving (either within the aquarium or to a different aquarium), the plant may "melt." This condition involves the leaves disintegrating into a pile of mush, sometimes within a day or two. The roots usually remain alive, and if not disturbed (siphon away the "mush" but do not disturb the roots) new leaves tend to appear within a matter of a few days or sometimes longer, even up to several weeks or (more rarely) months."