question for Zandor

hey man, I am getting mixed results as to what the proper pH should be for hydro during the flowering stage. It is ebb and flow and the muditity is pretty high. I saw that you recommend starting at about 70-80% humidity and then lowering it 5% a week until harvest. Our humidity is at like 70% right now at week 3 of flowering. We were thinking about turning off the inlet fan since temps aren't a problem right now, and letting the humidity settle out with the natural humidity of the house rather than the outside humidity which is currently really high in our area. can you lend some advice please? thanks

im interested in what the theory is behind the high humidity, i have always beleived that plants expel moisture through there leaves to take up moisture through there roots, thus high humidity will inhibit growth, especially during flower when the plant is creating resin to cushion the effects of dry winter weather, also at 80% humidity your asking for mold, for christ sakes it might rain in there, keep them girls at 40-50% the whole grow

The dryer conditions the harder the plants works. The harder the plants work and the dryer it is the more odors there are.

Let’s say that you have 70% for veg and into the first 10 day's of flower. Now if you lower it each week by about 5% on average you will end up 40-50% at the end. Just perfect to grow healthy flowers in the final stage of the cycle. The less the plants transpire the better temperature control the plant has internally. It will allow maximum uptake of nutrients and maximum conversions of the nutrients to sugars. Thus making larger and more flowers. The plant can put all it's energy into making flowers and not into moving needed food around the plant so each area can grow.

I'll cover more detail this week in my show. If you have confusion then others may as well.

This week it's outdoor's mostly but I can fit this in.

After all what's to outdoors, plant it and watch it grow like grass...lol j/k

thanks zandor, I guess i'm going to try turning off the inlet fan see how much that brings it down, but if that doesn't do it I guess we will have to look at other methods of bringing it down.

Zandor: ok so your saying the dryer the air the harder the plant is working, why is it harder, isn't it working with less resistance ?, let's say we have a perfect enviroment with optimum light, optimum CO2, optimum airation and perfectly balanced nutrients in a medium that has an ideal air to water ratio, we now have the perfect setup for optimum growth, in that type of setup our plants would be thriving with an impressive metabolic rate, but by the theory I'm going by, raising the humidity is creating more resistance in the air, so now that plant is working harder, because if all enviromental conditions are at optimal levels than our plants are working at optimum metobolic rates and we slow down the nutrient solution movement in the plant by raising the humidity then were starving the plant of nutrients it needs, I'm not saying your wrong, I'm saying my theory is create optimum metabolism and you get the by product, which is optimum growth, its kind of like the make her thirsty technique growers were using back in the 90s , then we all realized starving our plants of water can kill them, but the theory was corect just the technique was wrong, let's starve them of humidty and give them all the water they need

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Originally Posted by connisuer

Zandor: ok so your saying the dryer the air the harder the plant is working, why is it harder, isn't it working with less resistance ?, let's say we have a perfect enviroment with optimum light, optimum CO2, optimum airation and perfectly balanced nutrients in a medium that has an ideal air to water ratio, we now have the perfect setup for optimum growth, in that type of setup our plants would be thriving with an impressive metabolic rate, but by the theory I'm going by, raising the humidity is creating more resistance in the air, so now that plant is working harder, because if all enviromental conditions are at optimal levels than our plants are working at optimum metobolic rates and we slow down the nutrient solution movement in the plant by raising the humidity then were starving the plant of nutrients it needs, I'm not saying your wrong, I'm saying my theory is create optimum metabolism and you get the by product, which is optimum growth, its kind of like the make her thirsty technique growers were using back in the 90s , then we all realized starving our plants of water can kill them, but the theory was corect just the technique was wrong, let's starve them of humidty and give them all the water they need

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This weeks show turned out to be a special show with an interview with JDog600 and mysa it's the first of 2 parts.

I will try to explane this in more detail later I don't have the time today but I will check back in tomorrow.

Look up transpiring in the plant dry means the plant will transpire more to control the internal temperature. If they don't transpire then they get fat, happy thick foliage that is lush green and very healthy. You raise the RH with a fogger that is very small micron mists. But being prepared to control the environment is key. Fogger to raise the RH and a dehumidifier to lower the RH if it gets to high. Plus a sulfur burner just in case.

That's the quick version.

My 50 pint maytag is enroute Z. I have figured out how to use old coffee makers for sulfur pots...peace

faq to come later. need to make time to fabricate. OH, I remember when I had time...

I am still a little lost. A cut and dry answer for those of us that are a little less biologically inclined would be cool. :stoned: Lower humidity for flowering? 40-50% ranger or even lower?

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Originally Posted by deftdrummer

I am still a little lost. A cut and dry answer for those of us that are a little less biologically inclined would be cool. :stoned: Lower humidity for flowering? 40-50% ranger or even lower?

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Yes even lower then that for some strains. Some strains like 25-30% range it depends on the genetics and where the dominate trait come from, what part of the world in other words.

Is that simple enough?

yes thanks zandor. I have already bought a crystal type dehumidifier for our little closet. I think this should work out. If it doesn't it's time to invest in a $100 unit!