Judaz
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Farmer Community
Preview
Many of you have seen this image of ideal temps and humidity for growing cannabis but when it comes to growing in sealed rooms that are enriched with co2 you may as well throw away all the stuff that you find in the books and recommended across the web.
First of all having a dehumidifier in a sealed room is a must. Things can get real moist quick especially in the dark cycle. When I first started growing in sealed room I would set the dehumidifier to the recommended setting for flowering cannabis usually around 55% and even lower in late flowering to run on continous mode and hold this humidity. It works, don’t get me wrong but you may not be maximizing your yield and results like this. Why because a sealed room with co2 enrichment usually runs in the mid 80’s and not in the mid 70’s. I used to wonder why my nugs when grown in air exchanged environments always got bigger than my nugs with co2 enriched environments. Atleast in size not in weight. That was until I tweaked the way I use dehumidifiers in a sealed room.
What did I do different? Is that I started shutting them down completely during my lights on cycle. If you got a room brain controller then even better but if you don’t. Just shut it off especially the first 5 weeks. Absolutely no need for them unless you are trying to control powdery mildew. What did this do. Well it increased my humidity to the high 60’s low 70’s when my temps were between 82-85. After that I never looked back and started growing with high humidity in sealed rooms. The nugs and plant growth exploded. Best yields growing og Kush. Record breakers. Hitting over 3.5 a light sometime 3.8 a light. Why? Because of the importance of vapor pressure deficit. By letting the humidity get to those levels with the lights on and lowering down to 55-60% when the lights were off my plants flourished. No pm whatsoeve. Even with the lights off having 75% humidity levels when my ac broke down on a hot summer night where the temps were 85-90. The right way to grow in a sealed room is to start with co2 and high temps mid 80’s but keeping the humidity high too between 70-75% during first 3 weeks, then 65-70 % for weeks 4-5 60-65 week 6, 50-55 % week 7, 40-45% week 8-9 if you don’t do this your buds will get huge continue spitting white hairs and won’t crystallize properly. As you cut the humidity also start to cut your temps a bit from mid 80’s weeks 1-5, high 70’s weeks 6-7 to mid 70’s weeks 8-9 when the lights are on. And when lights are off you cut too in proportion maintaining, 5 degree differential, 1st 5 weeks to a higher differential in the latter weeks usually 10-15 degrees to promote extre crystallization.
What you are doing is controlling the way your plants uptake nutes. By controlling the vpd of the environment. You can read up on the science but in laymen terms what this does is allow you to steer your plants the right way to bring our desired type of growth that is needed for maximizing yield and resin production that is dependent on their timeline within their 8-9 week cycle.
I’m fact raising the humidity allows you to give more nutes to your plants and raise the EC to support the accelerated growth. You need to listen to your plants when it comes to EC levels. Given that you have your npk ratios dialed in for the given weeks the EC game is pretty simple. Try to keep the ppm in and ppm out runoff at balance. And your plants will always be happy. I start high weeks 1-4 and slowly bring it down the latter weeks. I don’t follow those bs feed schedule from nute companies that look like a bell shaped curve that tell you to peak in weeks 5/6/7 They are BS making you use way more than you need to at the wrong point in time. I let ppm out spike no more than 250 ppm from the in. The recirculated solution ppm in is constant day after day until the spikes occur.
In fact my plants tell me when they want the nutes to go down. Always Sometime in week 5 I get a spike in EC even when I lower them ppm in it keeps going up. It’s time for a power flush and a lower EC for the next feed.
Preview
Many of you have seen this image of ideal temps and humidity for growing cannabis but when it comes to growing in sealed rooms that are enriched with co2 you may as well throw away all the stuff that you find in the books and recommended across the web.
First of all having a dehumidifier in a sealed room is a must. Things can get real moist quick especially in the dark cycle. When I first started growing in sealed room I would set the dehumidifier to the recommended setting for flowering cannabis usually around 55% and even lower in late flowering to run on continous mode and hold this humidity. It works, don’t get me wrong but you may not be maximizing your yield and results like this. Why because a sealed room with co2 enrichment usually runs in the mid 80’s and not in the mid 70’s. I used to wonder why my nugs when grown in air exchanged environments always got bigger than my nugs with co2 enriched environments. Atleast in size not in weight. That was until I tweaked the way I use dehumidifiers in a sealed room.
What did I do different? Is that I started shutting them down completely during my lights on cycle. If you got a room brain controller then even better but if you don’t. Just shut it off especially the first 5 weeks. Absolutely no need for them unless you are trying to control powdery mildew. What did this do. Well it increased my humidity to the high 60’s low 70’s when my temps were between 82-85. After that I never looked back and started growing with high humidity in sealed rooms. The nugs and plant growth exploded. Best yields growing og Kush. Record breakers. Hitting over 3.5 a light sometime 3.8 a light. Why? Because of the importance of vapor pressure deficit. By letting the humidity get to those levels with the lights on and lowering down to 55-60% when the lights were off my plants flourished. No pm whatsoeve. Even with the lights off having 75% humidity levels when my ac broke down on a hot summer night where the temps were 85-90. The right way to grow in a sealed room is to start with co2 and high temps mid 80’s but keeping the humidity high too between 70-75% during first 3 weeks, then 65-70 % for weeks 4-5 60-65 week 6, 50-55 % week 7, 40-45% week 8-9 if you don’t do this your buds will get huge continue spitting white hairs and won’t crystallize properly. As you cut the humidity also start to cut your temps a bit from mid 80’s weeks 1-5, high 70’s weeks 6-7 to mid 70’s weeks 8-9 when the lights are on. And when lights are off you cut too in proportion maintaining, 5 degree differential, 1st 5 weeks to a higher differential in the latter weeks usually 10-15 degrees to promote extre crystallization.
What you are doing is controlling the way your plants uptake nutes. By controlling the vpd of the environment. You can read up on the science but in laymen terms what this does is allow you to steer your plants the right way to bring our desired type of growth that is needed for maximizing yield and resin production that is dependent on their timeline within their 8-9 week cycle.
I’m fact raising the humidity allows you to give more nutes to your plants and raise the EC to support the accelerated growth. You need to listen to your plants when it comes to EC levels. Given that you have your npk ratios dialed in for the given weeks the EC game is pretty simple. Try to keep the ppm in and ppm out runoff at balance. And your plants will always be happy. I start high weeks 1-4 and slowly bring it down the latter weeks. I don’t follow those bs feed schedule from nute companies that look like a bell shaped curve that tell you to peak in weeks 5/6/7 They are BS making you use way more than you need to at the wrong point in time. I let ppm out spike no more than 250 ppm from the in. The recirculated solution ppm in is constant day after day until the spikes occur.
In fact my plants tell me when they want the nutes to go down. Always Sometime in week 5 I get a spike in EC even when I lower them ppm in it keeps going up. It’s time for a power flush and a lower EC for the next feed.
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