The Grow Awards 2026 🏆

Back to Grow Questions

Extractor vent best for grow box 60x60x160

metamon3ystarted grow question 2y ago

Best extractor for a 60x60x160 grow box? How many m3/h? I need good airflow

Solved

Other. General questions

Setup. Ventilation

Feeding. Automatic systems

likes

WhiteEdgeanswered grow question 2y ago

Hello, good ventilation is if you can to replace air every 5min. You can calculate the required fan capacity in cubic feet per minute (CFM) by multiplying the volume of your grow space (in cubic feet) by the air exchange rate (in minutes) (using the following formula:(L x W x H)/3 = CFM In your case (2x2x6)/3=8 per minute, so to replace every 5 min you need 96CFM ventilator, or for exchange every 2 and half minute you need 200cfm vent - standard 4" ventilator

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Notsogreenthumb

Not exactly sure..I’ve noticed some of my fan leaves starting to “claw” or curl on the tips. And a few yellow leaves on the lower portion of the plant on some new growth. Any idea of what might be causing this? From what I read I think too much nitrogen? How can I fix this?

Other. General questions

6y ago

2

2

Solved

Medical strain advice needed What is the best strain(s) to grow indoors for PTSD induced insomnia AND anxiety? Can you recommend an indoor strain(s) for treating rheumatoid arthritis induced symptoms? And please, I can do internet searches, so...Thanks in advance to anyone who can give insight here.

Other. General questions

5y ago

5

6

Solved

When it rains too much So she is doing well, when I bring her in due to lots of rain. Should I put under grow lights or just let her chill in the window? when will I know to change light schedule or ready to flower? I know I probably have some time but just preparing for it.

Other. General questions

5y ago

1

Solved

Book suggestions My collection so far. Any other books y’all suggest?

Other. General questions

Other. Other

4y ago

3

4

Solved

The_Big_Legrowski91

LST - Am I going to hard? -/- Harvest - What to expect?Am I going to hard with the LST? Is it okay do make small adjustments every day or two? What do you think about the progress so far? I'm really wondering what harvest I can expect. Is it realistic to expect something between 20-40g per plant? Thanks everyone for taking the time

Other. General questions

Techniques. LST

4y ago

7

8

Solved

VPD Can anybody explain to me the VPD concept? my garden is very cold during night 13.5ºC as the minimum, humidity goes up to 72% During day it usually goes to 21ºC and 52% I´m watering the plants every 3-4 days (when they ask for it) with 0.75L on 6L pots Am I doing OK ?¿

Other. General questions

Setup. Sensors

Feeding. Schedule

2y ago

6

5

Solved

DrNickerbaucker

Does anyone has advice for watering a 3x6 bed? I’m considering Blumat or perhaps a nice moisture meter to help monitor???? I’ll pick the best advice for an answer. I appreciate you guys!

Feeding. Automatic systems

4y ago

1

1

Solved

Is this little guy worth fighting for?Cotyledons asymmetrical, burnt tip, yellow spots Leaves asymmetrical, burnt tip Stem is very straight, seems sturdy, height... about 3cm, in 1 week. It was my first time and so i made mistakes... overfed it, pH9 ... but i solved those... will he survive?

Other. General questions

2y ago

2

2

Solved

Umgeknickter zweiter Haupt Cola Hallo Mir ist ein Missgeschick passiert und die Lampe ist abgestürzt. Es ist nur einer Dame was passiert. Kann ich die (2 Wochen vor der Ernte) so stehen lassen oder sollte ich den 2. Cola kappen um dem 1. die Energie zu geben? Der 2 ist gebrochen hängt aber noch dran.

Buds. Other

Other. General questions

Plant. Other

5y ago

4

Solved

Ganja_Victoria_Aus

So Legend. Please give me a creative legendary theory and answer. I'm about to switch to flower. Preferably by me I just remove the 6h straight away from the start on detract 6. In the past 48h of sleep and switch. Witch method are natural Mother Nature transition. Ramp? Temp....

Other. General questions

Plant. Other

Techniques. Other

5y ago

2

2

Solved

Is there still more vertical growth to come?Is there still more vertical growth to come? I’ve switched to flower a couple weeks ago and it looks like my tops are starting to bud or is it just more nodes coming in with lots of female hairs??

Other. General questions

5y ago

3

3

Solved

Ancient_Genetics

Lack of water or its something else.Did it burn from nutrients, or was it due to a lack of phosphorus, or just because it didn't have water?. It seems to me that it is due to a lack of water, but a lack of phosphorus also occurs in a similar way.😄

Leaves. Tips - Die

Leaves. Color - Yellow

Other. General questions

3y ago

6

Solved

Bloom/harvest cycle question I'm having trouble understanding exactly what the harvest phase is. I can assume this is X number of says before the actual harvest but what makes it different than blooming phase? Thank you in advance

Other. General questions

4y ago

4

4

Solved

How could I improve my next grow?I would like an advice about this grow and what could I change next grow for yield to be more? I use only organic nutrients.Thank you all for help

Other. General questions

2y ago

10

3

Solved

Calcule g/w Bonjour 🤘 Comment procédé au calcule du g/w ? J'ai vue plusieurs choses, mai n'ai pas vraiment compris . Faut il attendre le séchage complet ou prendre le poid juste aprés récolte Élément 2x mars hydro ts1000.

Other. General questions

4y ago

2

2

Solved

Fan needed?Hello, I’m having my tent in the balcony and it’s 5-10 Celsius. Is the fan necessary in veg time? I know it’s needed for flowering, but do I need it in veg too? Thanks for any help

Other. General questions

5y ago

3

3

Solved

Time to flip?Is it the right time to install trellis net and flip her to flower? It's day 43, she is 23cm tall (the highest point), looks well-trained already with many branches. Should I defoliate before flipping?

Other. General questions

Techniques. Defoliation

1y ago

2

Solved

Ready or not?Today I opened up the tent and she fell off all the way to the ground hitting another 2 plants. I checked the thricomes and she was 90%cloudy and the rest crystal and a little amber. Do you think it´s ready to harvest? I want to chop it both to have smoke and to use the pot. Thx

Other. General questions

5y ago

1

3

Solved

420Highlifecouple

Is my purp turning male?HELP PLEASE!Is she turning male?Not sure if purple lemonade has been effected from my zkittlez,still not sure if both are turning hermaphrodite "male-female"

Other. General questions

Other. Other

Techniques. LST

4y ago

1

4

Solved

ColonelForbin1990

Should I begin my flush now or do another week of nutes?Hello. My plants seem to be growing at different rates and I’m worried about pushing the faster developer past her prime. I’m at week 9 and ILGM says 10-14 weeks. Should I start my flush or go another week with nutrients and harvest around week 12?

Other. General questions

4y ago

2

5