Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
White substance appearing on air tube. Anything to worry about?
Tobecobe
started grow question 4y ago
Roots seem clean and there doesnt appear to be anything in the res, but a white substance has began to form on the aquarium tube. Theres definately no light leaks in the res. Anything I should worry about?
Solved
Week 3
Other. General questions
likes
Hempy_The_Kid
answered grow question 4y ago
Hard water calcium build-up. Should be fine unless you want to add filters on your water source.
likes
Complain
Selected By The Grower
Organoman
answered grow question 4y ago
Correct, just dried out nutrient salts/calcium due to evaporation. Nothing to worry over.
likes
Complain
Similar Grow Questions
Solved
BullWeedDog
Ayuda mis plantas ya en su periodo final con hojas amarillas
Mis plantas ya se acercan a su periodo final pero una de ellas en las hojas que salen de las flores se están colocando amarillas en las puntas y no he empezado a hacer el lavado de raíces y en la misma planta he encontrado una hoja con los bordes negros, que puede ser??
Week 12
Buds. Not fattening
Leaves. Color - Yellow
Other. General questions
5y ago
4
4
Solved
bodhi
Harvest?
Harvest time? First grow so I'm not sure if these are cloudy and good, or if I should wait a bit. There are amber trichomes on the sugar leaves. I realize this is lame, but would love some help!
Other. General questions
6y ago
1
Solved
bobo66
Skunk1 FEM Why are the leaves of the plant like this?
Why are the leaves of the plant like this? I've been vegetarianing for 1 month Soil:Plagron Growmix,I do not over-water te plants i haven't used nutrients in a very long time.. PH:6.2 can I switch to flowering? Please find someone in the message my plants are already too tall...
Leaves. Edges burnt
Leaves. Curl down
Other. General questions
4y ago
2
5
Solved
growbie
Ready or not?
Amnesia Haze femi from Zamnesia. Full question in comment below - >
Other. General questions
6y ago
4
7
Solved
Nurse
temperature and humidity for auto from RQS
What do you think about the temperature and humidity that are highlighted in the photo for each week?
Other. General questions
Setup. Ventilation
6y ago
1
2
Solved
Bootymissles
Preflower?
Is THIS a preflower?? I think I have a girl!!
Other. General questions
6y ago
3
Solved
Cauli
Two wonderful Sticky Broccolis but only space for one – please view diary for more info and pictures to each plant
Actually there are two of her in the Tent and one should go. What would you do: – keep everything as it is – get rid of one, but which one? – set up a second tent for the smaller one, transplant her one more time and top her eight main branches to let her fill a 60x60 by herself
Other. General questions
4mo ago
10
8
Solved
ultra_violet
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?
Week 7
Other. General questions
Techniques. Defoliation
2y ago
2
Solved
Skylife
Feedback
Just want some feedback on my most current harvest, sherbet from seedstockers. First grow, tbh quite chuffed with this as weather has been way too hot where I am and had a slight affect got 28 grams off her
Other. Harvest - Curing
Other. General questions
6y ago
1
Solved
buddhi_coop
Flowering Stage Grow Light
What do you all think about this grow light for my flowering stage for 5 plants. It’s 2ft x 4ft 1000 watts I also have & 4x 4 - 80” grow tent.
Other. General questions
Other. Other
Plant. Other
5y ago
5
5
Solved
Tobecobe
Plants dragging on. Are we close to harvest?
Still seeing a lot of clears and few amber. Looking for thoughts as we're at D93. Pics in diary.
Week 13
Other. General questions
3y ago
1
Solved
Dr_Doobie
Two weeks left?
We’re just past six weeks (day 43) and we noticed some amber on some of the trichomes. We’re expecting to chop two weeks from today. Is that too long given how much amber is showing here?
Week 10
Other. General questions
6y ago
2
2
Solved
TheCalyxLaboratory
Why I dont get the green smiley?
My diarie is now complete, but I don‘t get a green smiley. Cause of the start in the flowering or what else?
Other. General questions
2mo ago
1
1
Solved
GermanGrows
Battle of the chems
Hello all. I'm trying to decide whether to grow chemical bride by greenhouse or fuel D.o.g by seedsman. What do you all think about those strains?
Other. General questions
5y ago
1
Solved
AirDuster
Dear Growbuddies, should I harvest yet, or give it a little more time?
Week 13
Buds. Other
Other. General questions
6y ago
2
2
Solved
Clutch
Neem Oil in 3rd or 4th week?
Can i spray one more time with Neem Oil now? 3rd or maybe 4th week of flowering now. Noticed that some leafs are being eaten. Product information says i can but i also read discouraging comments fron other users so im a bit in doubt. Ladybugs and praying mantisses also an option
Week 8
Other. Bugs
Other. General questions
4y ago
7
7
Solved
Noobftp
Total harvest
hi can anyone help me to get how many grams of crop per plant will be harvested from the seeds of blue cheese autflower? I planted a blue cheese car for the first time
Week 6
Other. General questions
6y ago
1
1
Solved
StannabalLecter
auto finish time
do you find that the autos are on time with the breeder’s estimate of how it will take the plants to finish? my current grow is at day 70 from seed, and not nearly ready for picking. from my experience, this underestimation from the breeders is the norm.
Other. General questions
4y ago
1
5
Solved
TheObserver
I got to harvest in 14 days: in order to have enough time to cure it before leaving home for 2 weeks (safety first: is a period of floods in here, I just can't take the risk). I had a pretty long vegetative stage but I'm gonna finish it at 13 weeks. Am I gonna ruin it it, right?
Week 11
Other. Harvest - Curing
Other. General questions
Other. Other
2y ago
1
1
Solved
Karalis89
hello friends, how do you find them 21 days? i started with 1ml of biogrow yesterday
Week 2
Other. General questions
4y ago
10
4