Grow room temps too high, Can someone help?

thegoldencrop

thegoldencrop

Member

  • [h=2][/h]
    Hello to all you helpful readers and growers of medicine. i need some help with my grow and would appreciate any hints or helpful suggestions.
    My situation is as follows:
    Took my garage and constructed a grow room with drywall. I have two 1000 HPS bulbs in a 9x10 space. Two passive air intakes close to the floor. One vent pulls hot air out directly from the portable ac, 9000 btu's, to a vent in the garage door. Another vent uses a carbon filter and is connected to both of the lights and exits into the garage. The only air exchange from the garage to outside is two vents in the garage door. While I'm home I keep the door from the garage to the house open so that whatever heat is in the room rises out of the room.

    My indoor temps are too high, 77-81 during the day. Relative humidity is between 38-43%. The lights are at least 15-18 from the plants. I use a hydro setup and they are on an automatic timer 4 times a day for 3 min with 5.7-5.8ph, 1.8 ec. They are in veg for last four weeks and recently recovered from an abnormal high ph problem. plants are still showing signs of excessive heat.

    Perhaps I need to give more info but I'm hoping this will do.

    Any suggestions?​


    ​

 
T

typhoon

Active Member
What do you mean,...."they are on an automatic timer 4 times a day for 3 min..."??? What is on a timer? I have my water on 24/7.
 
Illegal Smile

Illegal Smile

Well-Known Member
You can have ambient temps of upper 70s but have it too hot right at the canopy. And it's hard to measure there. Are the lights in air cooled reflectors? If not that's your solution. If they are you need to get an accurate measure of the surface temps on the canopy which is hard to do. Best way is a laser probe thermometer. I got one for $45 that works great. An ordinary thermometer won't work because it is registering too much radiant heat (light shining on the thermometer itself).
 
bunz420

bunz420

Active Member
I think that from the picks that u posted it looks like your overwatering, rockwool holds a lot of water u only need to flood 1 or twice sometimes my temps reach 80 with no problems, I would try to let the rockwool dry out a bit if I were u.. Peace
 
VX420

VX420

Active Member
Illegal Smile said:
You can have ambient temps of upper 70s but have it too hot right at the canopy. And it's hard to measure there. Are the lights in air cooled reflectors? If not that's your solution. If they are you need to get an accurate measure of the surface temps on the canopy which is hard to do. Best way is a laser probe thermometer. I got one for $45 that works great. An ordinary thermometer won't work because it is registering too much radiant heat (light shining on the thermometer itself).
Click to expand...

Is this your first grow? (Please say yes) I think you have too much Internet Info andnot enough... grow a plant experience

Not trying to be a dick... but your plants need a ton of help..
 
Illegal Smile

Illegal Smile

Well-Known Member
VX420 said:
Is this your first grow? (Please say yes) I think you have too much Internet Info andnot enough... grow a plant experience

Not trying to be a dick... but your plants need a ton of help..
Click to expand...
If you are responding to the wrong post, that's understandable. If you are really responding to me, you "are" a dick because you know nothing about me or my plants, and I'll gladly wager I was doing this before you were born.
 
ManishWayz

ManishWayz

Active Member
I'm not an expert and I have only done about three successful grows, but I will agree that from the pictures it does look like an over watering issue. I would say because of the size of rock wool cubes you are using that you might be able to get away with watering 2-3 times a day. Other then that they are looking good. Take a look at some of my work, I hope that it helps. www.youtube.com/MrManishWayz
 
VX420

VX420

Active Member
Illegal Smile said:
If you are responding to the wrong post, that's understandable. If you are really responding to me, you "are" a dick because you know nothing about me or my plants, and I'll gladly wager I was doing this before you were born.
Click to expand...

NO wrong post, I am sorry it was nothing you said I just miss clicked.
 
Al B. Fuct

Al B. Fuct

once had a dog named
thegoldencrop said:
the plants receive water 4 times a day at six hour intervals for three min with constant light during veg cycle. they are in rock wool, some just in blocks others in blocks and on a slab of rock wool. here are some pics.
Click to expand...
Way too much watering for rockwool. Plants are showing obvious symptoms of overwatering.

This arrangement would probably work OK if you were using clay pellets, but rockwool saturates too easily both for drip irrigation & for 4x 3mins/day.

If I were fixing this system, I'd run it as a flood sys with 1-2mins flood 1x/day.

Convert it to a flood arrangement & cut the plants back fairly hard, down to 3-4 nodes & try again.
 
Al B. Fuct

Al B. Fuct

once had a dog named
The yellowing may look like underfeeding but it's actually caused by root damage. Without a healthy rootmass, the rest of the plant starves.
 
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