They are in 30 lt pots it would be to crowded to put 4 under one light as im doing lst to make them horizontally
Temperature help please
- Thread starter D1104
- Start date
Tolerance Break
Well-Known Member
The LST should be done before they are put into flower.
Edit: Are you vegging under HPS?
The lst was done 2-3 days ago. I will leave them another 2 weeks till i turn them to flower
Yes it is hps
Tolerance Break
Well-Known Member
The type of LST nessessary to make 1 HPS per plant a rational choice takes a very long time.
This is a really really bad idea. You could buy several HLG 100w boards right now and save thousands in utilities for veg. Without the long veg this wont work. Since you wont reduce the number of lights, the cooling is even more important
Tolerance Break
Well-Known Member
I worked in a grow with 16HPS in a room more spread out and he used a home unit that cost over 10k for that room alone. Your problem is only going to escalate.
Star Dog
Well-Known Member
That's a nice set up you have, what about your extractor fan size?
From the picture I'd increase the diameter of the inlet ducting I'd use as big as possible for least resistance (or pascals iirc)
What size/type fan do you have?
The fan size is 2500 i believe
Star Dog
Well-Known Member
Sorry 2500 doesn't mean anything, what diameter of ducting does it take?
The big one is for the fan. The little one is a small moter to bring air in it has nothing to do with the fan
Star Dog
Well-Known Member
I'm not sure about a 8 fan in a area that size.
[The Art of Ventilation] How to Size Up Fans (Part 2 of 3) | GroWell
If you want plants to thrive, you need to extract stale, hot CO2 depleted air and replace it with fresh, CO2 rich air. Better pick a fan that's up to the job. Trying to pick a fan? Here's how to size them up.
www.growell.co.uk
Venting to the outside made a big difference in temperature and humidity for me.
Herb & Suds
Well-Known Member
I run 6 - 600 hps a 12 inch fan with 2500 cfm
I think the ventilation is not really taking the air out like it’s supposed to hint the high temps. They are at 33 c rn.I'm not sure about a 8 fan in a area that size.
I take it that you're not venting to outside when you have a small motor bringing in air?[The Art of Ventilation] How to Size Up Fans (Part 2 of 3) | GroWell
If you want plants to thrive, you need to extract stale, hot CO2 depleted air and replace it with fresh, CO2 rich air. Better pick a fan that's up to the job. Trying to pick a fan? Here's how to size them up.
Venting to the outside made a big difference in temperature and humidity for me.
Lordhooha
Well-Known Member
That seems high for one room with 16 lights. Also home units especially micro channels are not meant to control grow rooms.
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Tolerance Break
Well-Known Member
This was years ago and I was high the entire time, so my memory is sus, but i promise he knew what he was doing. It was a 3 story apartment complex converted into a grow op. I watched him perfect Master Kush. Dude was growing top colas the size of my forearm in flood and drain with rockwool.