My Tri-Meter says my DWC res is 80 degrees. I read in Cervantes Medical Grow Bible that anything over 85 will damage the fine hairs on the roots and cause the plant to wilt and growth to slow. I have plenty of air, 40W worth through four cylindrical 4" air stones and a bubble rope, going to the roots, so if its not getting up to 85 should I still worry about it? So far, the plant is not showing any negative signs, and the roots are still white and thriving as opposed to brown and rotting, which I am very familiar with. I have about 2-2.5 weeks left of flower, and then I am putting my HID up for the summer. Do you think I can make it without an IceProbe? Thanks in advance for any insight that anyone can provide!

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

A quick fix is to put a frozen 2-liter in the rez...I'm not sure the size of your rez, but just monitor it.

If everything is going OK then you will make it. Like said a plastic bottle of froozen water will help. Don't forget to show us the buds.

It was 82 this morning when I went to shut the night time curtain. I think I am going to move my portable AC down there tonight before the light comes on. I've used the frozen water in a bottle trick before, but in the past it lasts like an hour and then the temp is right back up where it started. My res is a 10 gallon bin with 4-5 gallons of water in it

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

That's the size tubs we use, the A/C will do you right. Beware you and your plants will love it. Might be a year round hobby. lol. Don't be surprised by a little purple some strains do it because of the cold. Our papaya the stems all turn purple at 72 degrees and the hawwianxskunkxbigbud stays real green.

If only I had the money to afford a second portable AC unit, I probably would grow year round, but the unit I am going to put in there for the next two weeks is from my bedroom, and I get too hot when I sleep without it. Thanks for the help!

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

I have not tried sleeping with the plants yet. It's aways cool there. Maybe like a human c02 genereator. LOL. Sure would smell good to me. Well off the the flower room it's late. LOL

Even if you don't have any pythium, the water can hold very little oxygen at that temperature and will significantly reduce yield. Switch to soilless next and grow year round.

Well the AC has lowered air temp from 88 to 81 the res temp from 82 to 75, but it doesn't look like its gonna go any lower than that. The buds are clearly still growing and the roots still look good, so I'm just gonna keep up with the AC and ride it out for two more weeks. I really need to look into one of those ice probes though for next year.

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Awsome 75 will work well to finish. Glad you had it. Let us know how it does.

Man I am fighting tooth and nail to keep these temps under 77°. I add a gallon of near frozen distilled water and it lowers it to about 69°, but then 3 hours later its back to 74° and slowly climbs to 77° by the time the lights go off. I left the AC on in the dark to see if it would cool the water but it only lowered it to 74°. And the funny thing is, it hasn't even been hot out! It was only 61° outside today, so how is my water warmer than that?

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Plastic holds heat fairly well and sorry but I have no idea atm on how to lower it outside of things already mentioned.

I have a trimeter and it needs calibrating now and then so i keep a check with a aquarium thermometer to make sure its right.

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There can be only one. it's the Wife.

I just got a new Tri Meter because my old one crapped out, so I'm sure its calibrated. Luckily I only have about 9-10 days left before I can harvest so I will just have to make do.

__________________
The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

also if you are not on the 1st floor of where u are at then you could have heat rising from floor/s below you

Nah I'm in the basement on a cold cement floor.

__________________
The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Have you tried to move more air in your res? Bubbles will help keep the temp down, as well putting the pump on a timer. Eco pumps run pretty hot as do MagDrives. Big ass air blocks keep mine happy and right at a steady 71.2.

I'm currently running a 36W industrial air pump to four 4"x2" cylindrical air stones, and a 4W pump running one of those 12 inch bubble rope things around the outside of the bin. Maybe the air that's being pumped in just needs to be colder?

__________________
The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

If pumps are just pushing hot air from the room into water, then warm water. Been there had that problem.

Hmm I never thought of that LOC NAR. I guess I just assumed that the colder air was going to be closer to the ground, so they would be pumping the coolest possible air. I now have both my pumps' intakes sitting directly in front of the AC vent. Thanks for the tip! I am also waiting for some 2 liters of water to freeze so I can throw that in there too.
The temps up to 79 now, went from 74 to 79 during the dark on a 71° day sitting on the cold basement floor.

__________________
The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Have you tried using Hydroguard? It 'allows' you to have the temp up in your res without the rotting the roots. I've had mine a couple of years ago where the water would go up to 84F and never had a problem when I uses Hydroguard.

sn

Just checked my temps after having the pump in front of the AC and it went up 2°. My ice bottles aren't frozen yet either.

I used hydroguard a while back, but I thought it was just to eat algae? The reason the roots rot is because the water holds less oxygen, so IDK by what mechanism the Hydroguard would add more oxygen or make it so the water was able to hold more O2 at higher temps.

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Anyone tried using a water heater blanket? I did a search for Ice Probe on the forum and someone suggested them, but is it a big hassle? Like is the water heater blanket sticky on the inside to get it to stick or what?

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The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.

Very strange the temp going up. I feel for ya. Hang in there and do what you can. You can make it to the end.

The frozen 2 liter is probably the best method yet, it keeps my res chilled to 65 while the air temp is 85. Just gotta keep three in rotation because they melt in about 5 hours.

__________________
The above post is fictional and should in no way be taken as truth.

If I were to grow cannabis, I would only do so to supply myself and my close friends. Doing this would take myself and my friends out of harms way by knowing the source of our cannabis, as well as take hundreds of thousands of dollars off the black market annually. It would also lower the demand of black market cannabis, and would ultimately help keep cannabis out of the hands of minors.