Dusting off and updating my old grow cabinet

bertosmurf · Mar 11, 2019

Ph meter came in over the weekend.

bertosmurf · Mar 14, 2019

I tested the cabinet with both chambers on for a few days, and discovered that the temps were getting in the low 80's. So i added 3 more fans. They push 44 cfm each. Time for more tests.

bertosmurf · Mar 16, 2019

Temps are still getting in the 80s. I believe the growstar light is producing to much heat.

Budda189 · Mar 16, 2019

bertosmurf said:
Temps are still getting in the 80s. I believe the growstar light is producing to much heat.

Maybe double up on exhaust(bigger filter)?? Or if you have lights on during the day switch to lights on at night to take advantage of cooler night temps. I'm no pro and maybe wait for some more professional answers lol but that would be my next steps. Just recently it got into the mid 70's outide where I live and my room (where box is) went up to high 80s! Needless to say my box got extremely hot. I threw an ice pack in front of intake vent inside box and it cooled it right down!

bertosmurf · Mar 17, 2019

Budda189 said:
Or if you have lights on during the day switch to lights on at night to take advantage of cooler night temps.

My temps are getting to a out 85. But i found out the house ac was set at 77. So i turned it down to 74 and the box temps dropped acouple of degrees. But turning on the lights at night semms like a more logical answer.

bertosmurf · Mar 19, 2019

Put some seeds in a napkin on friday. Planted them on sunday and they sprout today.

bertosmurf · Mar 21, 2019

Update on the babies. I ended up putting them in the flower chamber, while still on a 19hr daylight cycle. I also added nutes yesterday. Here they are after 24 hours of the changes.

Budda189 · Mar 21, 2019

bertosmurf said:
Update on the babies. I ended up putting them in the flower chamber, while still on a 19hr daylight cycle. I also added nutes yesterday. Here they are after 24 hours of the changes.

Nice! Glad to see everything working out!

Renfro · Mar 21, 2019

Nice to see things coming along well @bertosmurf

bertosmurf · Mar 24, 2019

Todays pic of the babies.

Way2-High · Mar 24, 2019

Nice cab and thread, good luck the rest of the way.

bertosmurf · Mar 27, 2019

Thanks y'all Here are the babies after 1 week from sprouting

HazednConfused · Mar 29, 2019

bertosmurf said:
I tested the cabinet with both chambers on for a few days, and discovered that the temps were getting in the low 80's. So i added 3 more fans. They push 44 cfm each. Time for more tests.

I, personally would take out the bottom fans in both tiers of your box and run passively. Your fans are kind of working against your negative pressure that you want to create. Fans tend to like to pull air on their own, without other fans forcing air into them. Ive had issues with temps in the past, and the culprit was the intake fan I was running. Just a thought.

bertosmurf · Mar 29, 2019

HazednConfused said:
I, personally would take out the bottom fans in both tiers of your box and run passively. Your fans are kind of working against your negative pressure that you want to create. Fans tend to like to pull air on their own, without other fans forcing air into them. Ive had issues with temps in the past, and the culprit was the intake fan I was running. Just a thought.

Thanks for the thought. But the plants seem to be doing fine Imo. The highest temp recorded is 84 in the flower chamber with the fans the way they are.

HazednConfused · Mar 29, 2019

That's cool. Just thought you were going for 70's.

bertosmurf · Mar 29, 2019

I was. But i honestly think the light puts off to much heat for the space.

Budda189 · Mar 29, 2019

bertosmurf said:
Thanks for the thought. But the plants seem to be doing fine Imo. The highest temp recorded is 84 in the flower chamber with the fans the way they are.

If im not mistaken 84f Is on the high end of exceptable Temps. Almost every guide I've read and journals I've watched say the ideal Tamps are between 72-77. Again that's ideal. Also(again correct me if I'm wrong) once plants start to flower high temps like that aren't good. If 84 was just a spike here and there I think it's OK but consistently you'll Def run into problems later on . So I've heard lol

KrazyG · Mar 29, 2019

HazednConfused said:
I, personally would take out the bottom fans in both tiers of your box and run passively. Your fans are kind of working against your negative pressure that you want to create. Fans tend to like to pull air on their own, without other fans forcing air into them. Ive had issues with temps in the past, and the culprit was the intake fan I was running. Just a thought.

@bertosmurf this is good advice and will sort your temps out.

bertosmurf · Mar 29, 2019

Ill give it a try. So you're talkung about taking out the intake fans and keep the exhaust. Correct ?

KrazyG · Mar 29, 2019

bertosmurf said:
Ill give it a try. So you're talkung about taking out the intake fans and keep the exhaust. Correct ?

Correct, only use extraction and have a bottom vent to bring air in passively.
You could fix the pc fans on top of each other to increase airflow

Dusting off and updating my old grow cabinet

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