It seems like the growers I know who use light movers have problems with powdery mildew. I was wondering if the PM is caused by the plant sitting in the dark half the time while the light movers on adjacent plants? Of course other factors could be promoting the PM but do you think those who use light movers are at a greater risk of contracting PM?
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Can light movers cause PM (powdery mildew)?
- Thread starter Bradley_Danks
- Start date
HarvestMoon303
Active member
No. The plants still get light, even when the mover is not over them, and they go to 12 hrs of darkness in flower anyway. Dehumifier is what you probably need, particularly in the PNW.
no.. I ran movers for a couple years
rhinoman 1
Active member
The only time I seen pm was when an a ac unit was being used. Window type.
If the light mover is used correctly plants are never left in the dark...
Broad generalizations lead to broadly mediocre bud.
You are correct, I too have heard this, but it would be a rare occurrence to say movers cause mold, BUT!!! many growers set the stage for a visit from the Pm angel without realizing it ..do you often water within a few hours of lights out, have excess water lying around in your grow room? .. have you high humidity inlets, or poor circulation? ..see it as the mold spores are always with you and the plant,and all you do is encourage the growth of the spores, accidentally,.. with excess use of water or temp, I use volumes of Neem Oil to great satisfaction, anything that disrupts the spores intended surface is a winner
errrmm not really there is nothing cheap about light rails... Dang expensive piece of equipment if you ask me?
I could have been more clear.
"People that use one light on movers to replace 2-4 lights"
Was what I meant to say. Not that rails or people that buy them are cheap. But that people that use them to the extreme to pinch out a few dollars (one light on a 16+ foot rail), are usually saving money to lose money re: inefficiencies, crop loss, etc.
Ok understood, but that is incorrect usage of the LR. It is there to reduce hot spots... as far as I understand it anyway!
Seen it a few times online as well.
HarvestMoon303
Active member
6-8 inches? I've never seen a mover that small in my life. The typical size in use, and for sale is close to 6 FEET (72 inches)
HarvestMoon303
Active member
They are around $125-$140 US. That's certainly less than the cost of a nice 600w or 1000w light setup, and many of us have multiple setups. Seems like a cheap solution to me. Perhaps not a good solution, but not really a "Dang expensive piece of equipment" when most people, running even a pretty basic HID grow, likely have over a thousand bucks invested in materials and equipment, even for a small tent grow.
The power bill is close to the cost of the light mover, for one month, for lights only.
The light mover is not causing pm. I used one for a year or so, then smartened up and got another light. More air movement, and filtered intake air. Prolly catch some shit for this, but the next round that is vegging. Hit them with some eagle 20 while your upgrading you air movement/cirulation system.
That way if the spores are still in the flower area, the plants will have a better resistance to pm. May be beneficial to spray any vegetation directly outside where the fresh air comes in with eagle 20 as well. Only takes 1/3 tsp per gallon to be effective.
That way if the spores are still in the flower area, the plants will have a better resistance to pm. May be beneficial to spray any vegetation directly outside where the fresh air comes in with eagle 20 as well. Only takes 1/3 tsp per gallon to be effective.
People that make broad generalizations tend to be of lesser intelligence.
To answer the OP, I've used a light mover for a few years now, and have never experienced PM. Honestly I don't see how the 2 could even be remotely related. Maybe that's cus I've never had PM.
Its more likely poor set up and management, Whut??? we got PM??? Its gotta be that old light mover!!!I've used a light mover for a few years now, and have never experienced PM. Honestly I don't see how to 2 could oven be remotely related. Maybe that's cus I've never had PM.
People never blame themselves!
