The Grow Awards 2026 🏆 
CO2 and PPFD
DutchGuy01started grow question 3y ago
Grow schedule per week:
Which CO2 ppm in relation with light PPFD?
Solved
Other. General questions
likes
Ctrellis90answered grow question 3y ago
Generally only use co2 if you're using HPS bulbs because of the amount of heat stress they put your plants under.
1 like
Complain
Ctrellis90answered grow question 3y ago
Co2 correlates with temperature not light conditions.
85-90 degrees F.
1200-1500 ppm co2
1 like
Complain
Similar Grow Questions
Solved
CaptainCream
CalIs in nessesry to use extra Cal & Mag if you growing in Coco ?Other. General questions
6y ago
3
3
Solved
Budz4me420
Can you grow in 100°F outdoor, direct sunlight?Zskittlez Auto, 95°F, Arizona direct sunlight, will it make it into the 110°F through the summer?Other. General questions
4y ago
4
5
Solved
Growerxm00
Opinion about Royal Cheese AutoHeys growers, any opinion about this beautiful girl?
Thank you
Good grows ✌️🏼🌱Week 7
Other. General questions
5y ago
1
1
Solved
NewbieDoobies
Any tips for the bloom period of this would be appreciatedWeek 10
Other. General questions
6y ago
1
4
Solved
GoodVibeSpreader
I watered too agressivly and think it damaged my plantI just watered my plant but I got a bit too fast while I was watering it and put lotta water at once and I just saw the plant floating she was almost about going out of the soil but hopefully she didn't
I hope this will not generate too much stress and I don't know what to expectWeek 1
Other. General questions
5y ago
3
2
Solved
Puffdamagikchillum
Personal informationHow do i add my personal information for prizes?Other. General questions
6y ago
2
3
Solved
mertingen
Are they female or male?What are those? They’re like signs of female plant but they have no pistil on them.Other. General questions
Plant. Spaces between nodes
5y ago
2
Solved
dalilama
How long left until I can harvest or flush?Hey, first time grower here. It's been almost 9 weeks since she started, on the seed this one is supposed to be ready for harvest in about 8/9 weeks.
She is really small, didn't really grow well but I'm seeing a lot of brown pistils and the end of leaves is yellow.
Thanks!Week 8
Other. General questions
6y ago
6
2
Solved
Terp_Derp
Choosing plants to keepWhen to choose the best plants to run with. Is it too early to ditch the tall scragglier guy and the short slower growing one?
These are all about 3 weeks old. I'm moving them to a 4x4 in a couple weeks when my current run is finished.
Quality first, yield second.Other. General questions
4y ago
2
3
Solved
SirSmokeALot333
Organic FlushHey guys
In my current run i am growing in Organic Soil / Coco mix and my Lemon Kix should be rdy in the next 10 Days but the leaves are still darkgreen from to much nitrogen this time. Should i give just water or can i add Florakleen or will this destroy the microbes ?Other. General questions
Feeding. Other
4y ago
1
2
Solved
MVgenetics
Harvest help complete walkthrough/guidance/best/your way/etcAlright, this is my first grow ever.. and I’m ready to finish flushing two out of six of my girls. I need a step-by-step complete idiots guide walk-thru of how to fully flush, harvest, and trim my girls. I don’t wanna feel nervous- I wanna do it the best way possible! Thx fam! ✊�Other. Harvest - Drying
Other. General questions
5y ago
5
4
Solved
Splifflicious
Yellowing first leaves - CalMag ? Bugs?Any suggestions on the yellowing first leaves issue #Day19? Is that a Cal or Mag def ?
Been watering with tap water left for 24h. Would RO water be better ? Does feeding with RO water on the entire life cycle involve to add more nuts ? I currently have only AN micro/grow/bloom.Tx6y ago
1
2
Solved
ironf1st
Mold Hazard in the last third of the growHigh there fellow practicioners of horticulture, I am slowly coming to the end of my very first grow. I am afraid of a mold hazard in the coming weeks, is the current state of the plants alright for the finishing line?
Temps: 25 on, 20-21 off
RH: 55 on, 65 offBuds. Other
Other. Mold
Other. General questions
3y ago
1
4
Solved
bbkaldo
First flowering? - is it the right time? Also, 'claws' on the tip freshest leavesIs this a first flower on BPP? I have no idea when to start with Bloom/Topmax, is this the right moment for this plant?
Also, you can see the little 'claws' at the tip of freshest leaves, just on top. Is this caused by putting the light source too close? It was 40cm,now 47/18,5Leaves. Other
Other. General questions
2y ago
2
2
Solved
PREPPYPUNK
How MANY Ocean Forest 1.5 cubic ft bags of soil do i need for 8, 3 gallon grow bags?OCEAN FOREST. I have 8, 3 gallon grow bags. How many 1.5 Cubic foot bags of Ocean Forest do i need? I messaged them and i think i got the wrong guy or something. Please help.Other. General questions
4y ago
2
1
Solved
Rastahipster77
Male or FemaleMe podrían ayudar a determinar el sexo? Muchas gracias.Week 2
Other. General questions
4y ago
7
5
