I think the extra wicking is one of the "improvements" Ray claims for the new PA. If there is good air space within the media it does not seem like the extra moisture should cause a problem with the roots.bwester said:Well, I had EXTREME salt build-ups on the new only. Plus every plant in the new started to have severely rotted roots. It wicked entirely too much and seemed to drown the plants. I experienced none of this with the old stuff.
Does hydroton have some irregular rough shaped pebbles or is it uniformly spherical?Ron-NY said:The new stuff looks much like hydroton but darker in color. I haven't used either but have used hydroton without a problem.
So the new PA must wick water twice as fast (much) as the old PA. That would mean it also may hold twice as much water.bwester said:If your pots have a reservoir did you notice if the water level dropped faster than with the old PA?
--Yes!!! the new ones dried up more than twice as fast!!!
I do notice more white crystals on the new PA but it appears to me that the are actually about the same as the old PA but show up better on the black pebbles. It stands to reason if the new PA evaporates water twice as fast it would accumulate twice as much salt crystals. Here again we don't find this a problem because we water frequently.Did you do any kind of test to determine if there was actually more salt build up? Or did you go by only the visible appearance?
--A test was not needed, there was a thick caking of crystals on the top of the media.
Do you mean the plants went from healthy to dead in 30 days?How long were the plants that died in the new PA?
--The paphs died fast, the phrags held on for a month or so
Was your experiment limited to paphs and phrags or did other genera die as well?Did you also pot up other plants at the same time with the old PA?
--Yes, I am a scientist. I did it very analytical. the same thing to each type. including some divisions of the same plant, one in the old and one in the new
Did all the plants you potted with the new PA die?
--All but one, a phrag.
Did plants die faster or slower between large and small pots?Did you use coarse or fine PA?
--the standard one ray ships
What size pots did you have the problem with?
--all sizes that ray sells
How many plants were affected?Where the plants that died new acquisitions or repotted plants you had had for some time?
Did you move any established plants from the old PA to the new PA?Where the dead plants transfered from organic media into the new PA?
Do you use RO water?What is your fertilizer regime?
--MSU 125ppm N