Co2.

Lenin1917 said:

co2s not gonna help as much as you think till you’ve got climate dialed in. You’ll be much better off putting that money into dialing in your environment.

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TintEastwood said:

Sounds like you need AC.
I use a window mount AC to manage heat for my 4x8x8 and 4x4. Co2 @ 700ppm in flower.

A Mini split would be ideal. But the cost goes up.

If venting to keep cool, the ambient intake air needs to be lower than the grow room.

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ThunderDrum said:

co2 is helping you.. you can add co2 in a variety of ways. You will get benefit if your room holds the higher co2 levels for 50% of the light-on hours. Just keep temps at 83-90f if you can and 65% humidity is good with co2. High humidity protects the leaves from the high heat.

I have only been using co2 for 50 days but I have grown plants since 1987. This past 50 day period has been interesting and productive. I have two co2 flower rooms. One completely sealed with ac and the other room venting 15 minutes each hour. Both rooms have greatly improved the MAC flower size and density.

if I may butt into your co2 thread with a co2 question? I have some plants in this higher heat, high light , high co2 that seem to cause leaf drop from week 1-3 in flower. This seems to happen more in the ventilated grow room. The leaves perk back up at 3.5 week of flower and the plants are producing 30% more than anytime before. But some Mac plants keep their leaves perky and another droops for quite a while.

i think maybe in this new co2 environment I’m being too safe on watering during veg as I now add c02 during final 3 weeks of veg. That has been my initial leaf droppage if a 3 gallon container gets too dry before watering the next day. But that perks up with water. But not in flower. They stay drooped or claw shaled until they have flowers.

I would recommend co2 to anyone that already grows healthy plants. Just learn your new environment. I’m learning everyday right now and now it is time to improve as I go forward. I see no issues since adding co2 just a real add leaf droop early in flower. I go 1000PAR, 1200 co2, 88 degrees f, 65%.

oh yeah. Here was one shock. Plants in 5 gallon never did as well as plants in 7 gallon. Except co2 changed that. I had to add plant food twice a day to one plant in a 5 gallon pot. It was the best plant I have grown of MAC. I guess it grew a hydropon method in coco. with the twice a day feed in middle flower time.

Click to expand...

ThunderDrum said:

co2 is helping you.. you can add co2 in a variety of ways. You will get benefit if your room holds the higher co2 levels for 50% of the light-on hours. Just keep temps at 83-90f if you can and 65% humidity is good with co2. High humidity protects the leaves from the high heat.

I have only been using co2 for 50 days but I have grown plants since 1987. This past 50 day period has been interesting and productive. I have two co2 flower rooms. One completely sealed with ac and the other room venting 15 minutes each hour. Both rooms have greatly improved the MAC flower size and density.

if I may butt into your co2 thread with a co2 question? I have some plants in this higher heat, high light , high co2 that seem to cause leaf drop from week 1-3 in flower. This seems to happen more in the ventilated grow room. The leaves perk back up at 3.5 week of flower and the plants are producing 30% more than anytime before. But some Mac plants keep their leaves perky and another droops for quite a while.

i think maybe in this new co2 environment I’m being too safe on watering during veg as I now add c02 during final 3 weeks of veg. That has been my initial leaf droppage if a 3 gallon container gets too dry before watering the next day. But that perks up with water. But not in flower. They stay drooped or claw shaled until they have flowers.

I would recommend co2 to anyone that already grows healthy plants. Just learn your new environment. I’m learning everyday right now and now it is time to improve as I go forward. I see no issues since adding co2 just a real add leaf droop early in flower. I go 1000PAR, 1200 co2, 88 degrees f, 65%.

oh yeah. Here was one shock. Plants in 5 gallon never did as well as plants in 7 gallon. Except co2 changed that. I had to add plant food twice a day to one plant in a 5 gallon pot. It was the best plant I have grown of MAC. I guess it grew a hydropon method in coco. with the twice a day feed in middle flower time.

Click to expand...

ThunderDrum said:

co2 is helping you.. you can add co2 in a variety of ways. You will get benefit if your room holds the higher co2 levels for 50% of the light-on hours. Just keep temps at 83-90f if you can and 65% humidity is good with co2. High humidity protects the leaves from the high heat.

I have only been using co2 for 50 days but I have grown plants since 1987. This past 50 day period has been interesting and productive. I have two co2 flower rooms. One completely sealed with ac and the other room venting 15 minutes each hour. Both rooms have greatly improved the MAC flower size and density.

if I may butt into your co2 thread with a co2 question? I have some plants in this higher heat, high light , high co2 that seem to cause leaf drop from week 1-3 in flower. This seems to happen more in the ventilated grow room. The leaves perk back up at 3.5 week of flower and the plants are producing 30% more than anytime before. But some Mac plants keep their leaves perky and another droops for quite a while.

i think maybe in this new co2 environment I’m being too safe on watering during veg as I now add c02 during final 3 weeks of veg. That has been my initial leaf droppage if a 3 gallon container gets too dry before watering the next day. But that perks up with water. But not in flower. They stay drooped or claw shaled until they have flowers.

I would recommend co2 to anyone that already grows healthy plants. Just learn your new environment. I’m learning everyday right now and now it is time to improve as I go forward. I see no issues since adding co2 just a real add leaf droop early in flower. I go 1000PAR, 1200 co2, 88 degrees f, 65%.

oh yeah. Here was one shock. Plants in 5 gallon never did as well as plants in 7 gallon. Except co2 changed that. I had to add plant food twice a day to one plant in a 5 gallon pot. It was the best plant I have grown of MAC. I guess it grew a hydropon method in coco. with the twice a day feed in middle flower time.

Click to expand...