Help please! Week 4 flower

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goldberg71b

Well-Known Member
whitebb2727 said:
Why is it not fine?

I know people repeat on forums that it needs to be higher but it doesn't and in that range there is no adverse effects.
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Well in my experience it sucks the water out of the leaves and they don't look healthy. Sometimes it make the veins in the leaves more pronounced also. Put a humidifier in there and they perk right up. Very similar to how a plant will wilt when the soil is dry. You water them and a short time later they perk right back up. Both are assuming you don't wait to long.

This is just my thoughts but I think outdoors it might be less important. Maybe not. I'm indoors only. But I think if it's to dry with HIDs the leaves suffer in higher temps. The closer they are to the light it seems to show these effects more.

But I'm not here to argue or repeat things I've read on here. I hope you don't think because I read something on this site I assume it automatically right? This isn't something I've read on here. This something I've noticed and solved.

But I have seen and trust the charts. I can't recall what it is called or where to find it quickly. But if someone cares to look it's not hard to find. There's a chart on I believe water vapor and temps it denotes which areas plants prefer. As the temps change so do the %s. But in general if I reall correctly in most temps we need to concern ourselves with it HIGH 40s to upper 50s.

I prefer 56-59% lights on personally. When I see it drop to 49% I make sure I watch it. Once I see 48 I turn on the humidifier. Now when the lights are off in flower I like the upper 40s. For veg lights off I've got the DH set much higher. I just keep it from going into the 70s.
 
whitebb2727

whitebb2727

Well-Known Member
goldberg71b said:
Well in my experience it sucks the water out of the leaves and they don't look healthy. Sometimes it make the veins in the leaves more pronounced also. Put a humidifier in there and they perk right up. Very similar to how a plant will wilt when the soil is dry. You water them and a short time later they perk right back up. Both are assuming you don't wait to long.

This is just my thoughts but I think outdoors it might be less important. Maybe not. I'm indoors only. But I think if it's to dry with HIDs the leaves suffer in higher temps. The closer they are to the light it seems to show these effects more.

But I'm not here to argue or repeat things I've read on here. I hope you don't think because I read something on this site I assume it automatically right? This isn't something I've read on here. This something I've noticed and solved.

But I have seen and trust the charts. I can't recall what it is called or where to find it quickly. But if someone cares to look it's not hard to find. There's a chart on I believe water vapor and temps it denotes which areas plants prefer. As the temps change so do the %s. But in general if I reall correctly in most temps we need to concern ourselves with it HIGH 40s to upper 50s.

I prefer 56-59% lights on personally. When I see it drop to 49% I make sure I watch it. Once I see 48 I turn on the humidifier. Now when the lights are off in flower I like the upper 40s. For veg lights off I've got the DH set much higher. I just keep it from going into the 70s.
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We can be adults and disagree. I grow I doors and out.

Vapor something or another chart. I've seen it also.

That chart really doesn't apply in an artificial environment we create.

In my experience in the 40% rh range and in the 80's for the temps. Getting into the 90's and above, yes higher rh will be needed and beneficial.

In the context I as speaking, 40 percent is fine. I would be comfortable with temps in the 90's and rh in the 40's range. Its happened. My grow was hot one year.

I digress. We will just have to agree to disagree and that's perfectly fine.

Have a good one.
 
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goldberg71b

Well-Known Member
whitebb2727 said:
We can be adults and disagree. I grow I doors and out.

Vapor something or another chart. I've seen it also.

That chart really doesn't apply in an artificial environment we create.

In my experience in the 40% rh range and in the 80's for the temps. Getting into the 90's and above, yes higher rh will be needed and beneficial.

In the context I as speaking, 40 percent is fine. I would be comfortable with temps in the 90's and rh in the 40's range. Its happened. My grow was hot one year.

I digress. We will just have to agree to disagree and that's perfectly fine.

Have a good one.
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10/4. I also wouldn't go into the 80s with my temps. Once again I'd say indoor and outdoor is different with the obvious I have NOT grown outdoors.

Same thing here. I'll take upper 70s WITHOUT going to 80. Here I'll tell you the only time my temps have crossed 80 is by accident. I watch my temps and it posts highest and lowest temps. Drawing air from outside brings with it changing intake temps. Therefore some days I have to adjust my A/C. Sometimes it holds good for weeks others like spring and fall temps can be dramatically different day by day.

When I have to adjust I push for the highest without crossing 80. Sometimes you have to cross that line to find it. But it's not over for long. I've just learned I need to drop the A/C down a degree. But I've never been over 80 for any period of time. If I had to choose between going over 80 degrees or dimming my lights for a night. I'm dimming my lights.
 
OldMedUser

OldMedUser

Well-Known Member
We have chronically low RH here so I just feed less when the RH is really low as even with a humidifier I can't keep the RH up running the 1000W. The exhaust fan runs so much keeping the heat down to 70 - 75 that the moisture gets sucked right out all the time. It's holding around 30% now which is fine by me as they are at 6 weeks flower. (40 days today)

Hoping to get a small A/C unit to help with the heat so the fan isn't going so much and can allow the RH to go up but then I'd need CO2 as all those plants will use up the atmospheric CO2 in minutes.
 
whitebb2727

whitebb2727

Well-Known Member
goldberg71b said:
10/4. I also wouldn't go into the 80s with my temps. Once again I'd say indoor and outdoor is different with the obvious I have NOT grown outdoors.

Same thing here. I'll take upper 70s WITHOUT going to 80. Here I'll tell you the only time my temps have crossed 80 is by accident. I watch my temps and it posts highest and lowest temps. Drawing air from outside brings with it changing intake temps. Therefore some days I have to adjust my A/C. Sometimes it holds good for weeks others like spring and fall temps can be dramatically different day by day.

When I have to adjust I push for the highest without crossing 80. Sometimes you have to cross that line to find it. But it's not over for long. I've just learned I need to drop the A/C down a degree. But I've never been over 80 for any period of time. If I had to choose between going over 80 degrees or dimming my lights for a night. I'm dimming my lights.
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I grow in a basement. Basements are great for growing. Constant cool temps.

goldberg71b said:
Hmm. I don't follow that thought process. I certainly think that chart has value to an indoor grower. Why wouldn't it apply?
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I just don't really worry about it. Its not a big deal.

Sure if a grow gets way out of parameters it would be a problem.

That chart doesn't always hold true. It can vary by strain. Some like higher or lower rh.

Temps can be an issue. Biggest reason is in an indoor grow the root zone is exposed to the same temps as the canopy. With an outdoor grow the plants are in the ground. Keeps the roots cool in the summer and warm in the fall.

You can run higher temps in an indoor grow by keeping the roots insulated.

Ill agree that that chart would be a good baseline but I wouldn't worry much about getting out of range as long as the plants are ok.

I just found the sweet spot for rh to be in th 40 percent range. More resin. Less chance of pm or mold.

Cannabis is an amazing plant. It has adapted to almost every climate on earth.
 
dannyboy602

dannyboy602

Well-Known Member
whitebb2727 said:
I agree.
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look at those dark green leaves again and tell me it looks N starved. Then look at the meals he put in his mix and see how the dark green leaves got that way.
It's not starved for N, it's choking on too much of it. Sometimes N over abundance takes a while to present.
If he recycles the mix he's using the next crop might fare better but at six weeks in this round is a wash.
He will need to cure longer to avoid a harsh smoke. I stopped using meals a long time ago...especially in potted plants because it just doesn't mellow as well as in the ground. XXXOOO.
 
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goldberg71b

Well-Known Member
I'm in a basement as well. I surely understand the air exchange to maintain temps can affect the humidity. That's why when it affects it in a negative manner I adjust it. Sometimes I can run more air than others. After a rain or anytime it's really humid I suck in all the fresh air I can. Way more than minimum required. Other times when humidity is lower I only bring in as much fresh air as needed. Because that isn't enough to maintain temps I use the A/C more with humidifiers. Sometimes its a day to day readjustment.

Mid to late flower I do keep it a bit lower during lights on and off. I've NEVER had a PM problem.

Last night was one of those nights for me. 2 humidifiers and air intake down to required amount only. And all those humidifiers could do was bring it to 52%. But that in my opinion is better than where it would have been without them.
 
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whitebb2727

whitebb2727

Well-Known Member
dannyboy602 said:
look at those dark green leaves again and tell me it looks N starved. Then look at the meals he put in his mix and see how the dark green leaves got that way.
It's not starved for N, it's choking on too much of it. Sometimes N over abundance takes a while to present.
If he recycles the mix he's using the next crop might fare better but at six weeks in this round is a wash.
He will need to cure longer to avoid a harsh smoke. I stopped using meals a long time ago...especially in potted plants because it just doesn't mellow as well as in the ground. XXXOOO.
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I agree.

I was agreeing with the under water part. I even suggested the soil needed to cook longer and was possibly hot.

Most of the issue is from chronic under watering. I really believe that. I've seen it. I've been through it.

I went back and looked. He used bone and blood meal. The bone meal wouldn't cause abundance of N. Blood would. Blood meal is fairly water soluble and burns. Its possible that it cause the dark green leaves and is now hungry again.

I still believe the issue is under watering.

I still use certain meals in my mixes. Not blood meal.
 
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dannyboy602

dannyboy602

Well-Known Member
whitebb2727 said:
I agree.

I was agreeing with the under water part. I even suggested the soil needed to cook longer and was possibly hot.

Most of the issue is from chronic under watering. I really believe that. I've seen it. I've been through it.

I went back and looked. He used bone and blood meal. The bone meal wouldn't cause abundance of N. Blood would. Blood meal is fairly water soluble and burns. Its possible that it cause the dark green leaves and is now hungry again.

I still believe the issue is under watering.

I still use certain meals in my mixes. Not blood meal.
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Good to know...I always treated them the same. I'm with ya on the underwaterwatering.
 
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