03-03-2010, 05:21 PM
Originally Posted by 3oranges
-The medium was boiled 3 times in RO water and soaked for well over a week with a changing of the water every couple of days.
-If my humidity gets much over 65% I would run into mold issues. My humidity has never been an issue before and I am sure it is not the problem
-The fine grade Hygroton was not mixed, just sprinkled on the surface because the roots did NOT like contact with the Prime Agra.
-I've concluded that the plant will not take well to S/H and am moving it back to an organic mix. Do not want to risk the roots from the new growth dying again. I'm guessing the new roots will have the same blackening with the hygroton as well.
All sounds pretty good to me - after boiling and soaking, all that's left is inert clay, for sure.
But I just can't see a phrag not liking semi-hydroponics!
I have seen roots "shrink back" from LECA if it is kept dry, and your description suggests that may have been the case. Some folks mist the top of the LECA, others put a layer of sphag on the top until the new roots sink in, and one guy makes a plastic cover that stays permanently on the pot (sort of like a Christmas tree skirt), so condensation drips back into the pot.
Using science and logic
to advance orchid growing