I don't find where you live.
In the summer in Japan, it is very hot. Cp-growers in Japan don't
always win good result in the growing of cool loving cp.
Therefore, I don't find whether or not my experience is useful.
I am growing U.quelchii in two ways.
One:
The Coca Cola refrigerator (It is placed in the supermarket.).
I bought it which is secondhand. I put some electric products to the
refrigerator.
By it, A refrigerator is managed as follows.
The fluorescence light lights up from 7 a.m. to 6 p.m..
The temperature is kept by 25 degrees of centigrades from 7 a.m. until
6 p.m.. Then, it is kept at 12 degrees of centigrades during night.
I am not always being satisfied about the result.
Because, the leaf is very soft and it is thin.
Another one is :.
The forerunner of this equipment was introduced by our esteemed
colleague Jeff-san(Dr.Jeff Welch). It was introduced as the growing
methods of my Darlingtoina.
I made a box with semitransparent plastic.
The box is divided into two pieces of the upper and lower space with
the board of styrene(polystyrene foam). I opened some holes to the
board of styrene. I hung cray pots on the hole. The cray pots is spindly.
In other words, the cray pots are in the lower space . The plants are
in the upper space .
I let air in the lower space from outside. It is done by the small
ventilator. Your personal computer has a similar ventilator probably.
Air goes around the cray pots. Water vaporizes from the cray pots
surface.
It cools both of air and the cray pots.
It cools the underground part of the plants.
Moreover, the humidity of air increases.
The air which went through the space like the labyrinth moves to the
upper space.
The air cools the plant which is in the upper space.
Then, the air is disposed of from the small window which is in the
upper part of the box outside.
However, the humidity of the air is insufficient.
I spay water from the top of the box to the plants by the timer control.
In the summer in Japan last year, the record hotness of it was done.
In my small green house, it became equal to or more than 45 degrees of
centigrades in the daytime.
It became equal to or more than 35 degrees of centigrades probably in
my small box, too.
Because I was busy last year, I don't have confidence about this thing.
This box doesn't have ability like the refrigerator.
However, I was extremely satisfied with the result.
U. quelchii wasn't dormant.
Then, the plant always renews a leaf.
The leaf is a healthy color like the time when it is in naitive habitat.
Moreover, it has thickness.
The water reservoir root is healthy,too.
The defect is :.
Black cyanophytes(?) which is peculiar to Tepui propagates in the box.
It seems Extremely filthy.
about acid water.
According to my friend
U quelchii lives in the surface of rock and the tree. There is the
crack of rock and so on in the skin of the tree in the lichen which
the tree had.
They don't absorb the water of the acidity of Tepui.
They absorb rainwater.
In Japan, we can use water supply water just as it is to cp.
We aren't troubled by the securing of water.
Kind regards from Japan
Isao