How can I slightly lower the temperature in my tent ?

Keod · Mar 25, 2021

Hey guys first time grower here.
So I am at the end of week 2 of flowering. Buds are starting to appear and its exciting !

I have a problem with temperatures in my tent when the lights are on.

The thing is I have 2 LED lights: A Marshydro TS3000 (450W from the wall)& Marshydro ECO600 a blurple(220W from the wall)
I run my lights at night. From 22:00 to 10:00 to reduce heat.

Only using the Marshydro TS3000 temperatures do not exceed 26°C/78°F ! So perfect right ?!?

But I want to make use of my 2nd light and add another 220W power for my grow.

But with the Marshydro TS3000 + MarsHydro ECO600 temperatures vary between 26/28°C (78/82°F) to 30°C(86°F) !

So I am slightly to hot for ideal conditions...

Yesterday I tried adding ducting from the window to my tent hoping that the negative pressure created by my exhaust fan would suck up in the fresh cool air from outside . At the moment temps at night outside are in-between 3 to 8°C (37 to 46°F). And so far I feel it kinda works, I can feel a little fresh air coming in from that ducting.

So what do you guys think :
-Is the added 220W worth the trouble ?
-What other methods could I implement?
-Would setting the timer for the extra light for only during the coldest period of the night be a good idea ?

Sorry fir the very long post, I tried to be as clear as possible.

lvstealth · Mar 25, 2021

its complicated to explain, but for a temp fix, try making a quasi swamp cooler

get a swamp cooler filter, and a pan to set it in, then an aquarium pump, fill the pan, use the pump to water the filter then blow a fan through it. you will have to fill the pan like you fill your humidifier, and you can cut the filter down to a manageable size and use a small fan, it will take it down about 3-5 degrees

mysticepipedon · Mar 25, 2021

Keod said:
Hey guys first time grower here.
So I am at the end of week 2 of flowering. Buds are starting to appear and its exciting !

I have a problem with temperatures in my tent when the lights are on.

The thing is I have 2 LED lights: A Marshydro TS3000 (450W from the wall)& Marshydro ECO600 a blurple(220W from the wall)
I run my lights at night. From 22:00 to 10:00 to reduce heat.

Only using the Marshydro TS3000 temperatures do not exceed 26°C/78°F ! So perfect right ?!?

But I want to make use of my 2nd light and add another 220W power for my grow.

But with the Marshydro TS3000 + MarsHydro ECO600 temperatures vary between 26/28°C (78/82°F) to 30°C(86°F) !

So I am slightly to hot for ideal conditions...

Yesterday I tried adding ducting from the window to my tent hoping that the negative pressure created by my exhaust fan would suck up in the fresh cool air from outside . At the moment temps at night outside are in-between 3 to 8°C (37 to 46°F). And so far I feel it kinda works, I can feel a little fresh air coming in from that ducting.

So what do you guys think :
-Is the added 220W worth the trouble ?
-What other methods could I implement?
-Would setting the timer for the extra light for only during the coldest period of the night be a good idea ?

Sorry fir the very long post, I tried to be as clear as possible.

The ducting sounds like a good idea. You can add a more powerful exhaust fan.

While 30 C might be slightly higher than ideal, it's not that much higher than ideal. Your plants won't suffer photorespiration or anything.

Keod · Mar 25, 2021

mysticepipedon said:
The ducting sounds like a good idea. You can add a more powerful exhaust fan.

While 30 C might be slightly higher than ideal, it's not that much higher than ideal. Your plants won't suffer photorespiration or anything.

The question is guess , Are the extra 220w gonna do more good than bad ?

Keod · Mar 25, 2021

The tent was 30° this morning a bit before 10:00... It is probably less hot at night around 4 or 6 in the morning I will have to stay up late to check that out ...

What about sticking 4or5 bottles of frozen water for when the lights are on ? Take em out for the lights off schedule and bang em back in when the lights are one each day ?

JSH1973 · Mar 25, 2021

Your TS3000 is designed so you can move the driver/ballast outside the tent to help with lowering temperature.

Keod · Mar 25, 2021

JSH1973 said:
Your TS3000 is designed so you can move the driver/ballast outside the tent to help with lowering temperature.

Yep ! Its already the case ^^

coherent · Mar 25, 2021

Just lower the room temp if you can and then increase the rpm on your inline fan so you exchange more tent air faster.

lvstealth · Mar 25, 2021

you can get a Humidity/Temperature guage that you can link with your phone and monitor it remotely. it also keeps a log of the temps for the duration. so you can look back and see trends and note the times that it is the biggest issue.

i got the Govee Indoor Hygrometer Thermometer 2 Pack, Humidity Temperature Gauge with Large LCD Display, Notification Alert with Max Min Records, 2 Years Data Storage Export for Room Greenhouse, Black. it was about $20 for 2 of them, and it is great.

JSH1973 · Mar 25, 2021

Keod said:
The question is guess , Are the extra 220w gonna do more good than bad ?

Maybe I missed it but what size tent is it, I have 450watt from 3 TS1000 in my 2/4/6ft and it is plenty, did my first grow with 2 x TS1000 300w (and got over 1/2 kg of cured buds) but added the extra light at week 5 for this grow.
Your TS3000 is even newer and better than the TS1000 lights I have so depending on tent size you might be just fine with only that.

Keod · Mar 25, 2021

coherent said:
Just lower the room temp if you can and then increase the rpm on your inline fan so you exchange more tent air faster.

Hmm so i would need a bigger carbon filter then !

mysticepipedon · Mar 25, 2021

If your plants aren't getting any light burn, I would favor adding more light and accepting 30 C.

Keod · Mar 25, 2021

JSH1973 said:
Maybe I missed it but what size tent is it, I have 450watt from 3 TS1000 in my 2/4/6ft and it is plenty, did my first grow with 2 x TS1000 300w (and got over 1/2 kg of cured buds) but added the extra light at week 5 for this grow.
Your TS3000 is even newer and better than the TS1000 lights I have so depending on tent size you might be just fine with only that.

4x4x7 . Maybe I need stronger exhaust? I have a 6inch exhaust that goes up to 800m3/H (or 470 CFM ) that i run on half the speed for noise issues. But apparently the speed I have it running should be sufficient for my space

JSH1973 · Mar 25, 2021

If you are at home every day anyway you could just use a cooler block or two, the ones for cooler boxes that you stick in the freezer

Keod · Mar 25, 2021

JSH1973 said:
If you are at home every day anyway you could just use a cooler block or two, the ones for cooler boxes that you stick in the freezer

I thought of that! Since they will be on the floor next to the pots . Is there a chance they can hurt the roots ?

Bluntsmoke · Mar 25, 2021

Should be fine sucking in cold air from outside. That's what I do. 4×4×7 tent with intake outside cool air exhaust into room. Keeps my temp 68°-74° farenhiet. Works the same for my 4×8

Like2Grow · Mar 25, 2021

Keod said:
So what do you guys think :
-Is the added 220W worth the trouble ?
-What other methods could I implement?
-Would setting the timer for the extra light for only during the coldest period of the night be a good idea ?

Sorry fir the very long post, I tried to be as clear as possible.

For $25 bucks you get a temperature control which can be plugged into a timer. When the tent is cool enough and the time is right the second light comes on, other wise it stays off.
https://www.amazon.com/Programmable...ywords=temperature+plug&qid=1616690132&sr=8-8

RealizedReal000 · Mar 25, 2021

So your running with the ts3000 450 watts. And you need 560 ways to properly light your space. So 100 watt difference should be ok. I would stick with the one since adding another will likely raise temps even more.

Dub_City405 · Mar 25, 2021

Whats the temperature outside the tent? Move more air. take hot air out of tent. 86 is a tad bit high you can run 82 with LED nicely. 84 is pushing it.

Keod · Mar 25, 2021

Dub_City405 said:
Whats the temperature outside the tent? Move more air. take hot air out of tent. 86 is a tad bit high you can run 82 with LED nicely. 84 is pushing it.

It varies during the day its comming up to 20 on hot days.1
For that reason i run my lights during the night .
At night outside it has been between -2 up to 10°Cn inside my appartement all the heating is out and the temperature must be around 15°C on average.
I have an extra exhaust fan that I will use to suck in cold air from outside . But what are the risks of not having enough negative pressure in the tent ?
The temp controlled timer is a good idea also just like for my mist maker.
I will try and test out d
Multiple techniques over the next few days and keep you guys updated.
I might be greedy but I really want to see how much 220W can add to final yields. I would like to break a pound or even better 20oz ^^

How can I slightly lower the temperature in my tent ?

How can I slightly lower the temperature in my tent ?

Keod

lvstealth

mysticepipedon

Keod

Keod

JSH1973

Keod

coherent

lvstealth

JSH1973

Keod

mysticepipedon

Keod

JSH1973

Keod

Bluntsmoke

Like2Grow

RealizedReal000

Dub_City405

Keod

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