Lights dehydrate my soil


#1

A question from a fellow grower:

Hi,

I’ve got problems with my grow, my lights dehydrate my soil in no time at all, 60x60x120 tent, 250w MH.

Can you advise me?

Thanks


#2

There’s lots of different options in this case.
*raise light level
*change light density
*add potting plate
*change soil mix
*add polyacrylamide to current soil mix
*change fan position in grow room
*hydrate grow room
*lower heat in grow room
*change growing style


#3

It’s literally this simple, ready?
Take a piece of cardboard, cut it out to match the shape of your pot. Cut a slit into the center of your circle, and then cut a little hole in the center of your circle.
This will cover your dirt from the sunlight. Just remove the cardboard when watering, and replace when done.
I use to use extra Mylar I had lying around. I don’t really recommend the cardboard, just because it’s porous and I feel like could cause problems eventually. But get creative, find something you can use to cover your dirt and you’ll be fine.

Treez


#4

I noticed that the more leaf cover I take out the more this happens. I noticed my black pots were heating the room up, and the roots also. So I taped white paper to the sides of my plastic containers. I went from 82 to 79 degrees overnight. Then when the plants thoroughly shaded the dirt the temp went to 77. Hope this helps a bit. :slight_smile:


#5

Has anyone every done any test to determine the best amount of
water a pot should hold ?

Curious as I am using a 3 gal felt pot with Pro-Mix HP & 15% Perlite,
Plant is 10 weeks Veg @ 8 inches tall and 3 foot by 2 foot canopy.
Pot holds 1 gal water/nutes, (20 cups in with 4 cups run-off – 20% Run-Off)
Water every 3 to 4 days.

Anyway just curious if there is a optimal water retention amount


#6

I use promix, my seven gallon pots take two gallons with minimal runoff.


#7

Possibly, but I am unaware. A good place to look would be the manufacturer your media. They might have saturation statistics.


#8

Thanks, I’ll check there. Was really just curious if any MJ specific studies had
been done to find an optimum, probably not as there are far to many variables.