Start My Diary
Start My Diary
Login
Sign Up
Login
Start My Diary
Home
Diaries
Shorts
Questions
Contests
Growers
Strains
Seeds
Breeders
Nutrients
Lights
Equipment
Blog
English
Espanól
Русский
Deutsch
ไทย
Login
Start My Diary
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Chat
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Back to Grow Questions
Mould on top of substrate
Dat_Maltez_Loud
started grow question 3y ago
There is some sort of mould on the top of the substrate. I think I will spray it with diluted hydrogen peroxide. Is this a good Idea?
Solved
Week 1
Other. Mold
likes
Dr_Drexxx
answered grow question 3y ago
Hey ! Don’t spray it ! Looks like it’s just the great white’s beneficials bacterias and fungi that shows up. You’ll be perfectly fine.
1 like
Complain
Selected By The Grower
ChitownCannaChica
answered grow question 3y ago
Trichoderma fungi—- common and it’s a sign of healthy soil! Leave it be!
1 like
Complain
PEACEMAKER
answered grow question 3y ago
Hm ml of cal mag u use? And is it organic? It can just b salt build up no need to worry but a pic would be better, good luck 👍
likes
Complain
m0use
answered grow question 3y ago
Its not dried minerals salts from using liquid fertilizer is it? GW is a living product. some of the things growing maybe part of it. Good Luck!
1 like
Complain
PEACEMAKER
answered grow question 3y ago
Pic for more information
likes
Complain
Similar Grow Questions
Solved
LSDMan
Early Harvesting
Do you think I should harvest the early gorilla and the serious six # 2 right now? given the very rainy weather forecast? (Knowing that I am harvesting serious Six # 1 today, this only concerns the other two plants which are missing about 3/4 weeks of flowering)
Week 17
Other. Mold
5y ago
6
4
Solved
CreamOfTheCrop
Mold/Fungi
Today I've found white spots on some of the leaves. What could it be? Mold/Fungi? I've been strugglin real hard to keep the humidity below 50%, but due to the constant rainstorms I only manage to get it to 54% at daylight and 58-60% at nightime :(
Week 9
Leaves. White powder
Leaves. Other
Other. Mold
5y ago
1
2
Solved
StraightLine
White mold on the surface of the soil
Hello guyz! On the surface of one pot appeared some white mold or something like that. What’s wrong? Why has it appeared? What should I do with this? Thanks for your help!
Week 2
Other. Mold
5y ago
6
7
Solved
revdrjim
is this mold or mites or something else?
just harvested my white widow fem. some of the largest buds has a whitish almost cottony thing going on on the inside when i cracked them in half. i assumes it was mold but could it be mites?
Other. Mold
5y ago
2
5
Solved
foyef66149
Is it mold in flowering stage?
I've noticed some discoloration in 3 buds and I'm not sure what it is. I am at week 7 of the flowering stage. The strain is Honey Cream FAST version feminized. I was planning to start flushing and harvesting in 2 weeks. What should I do? Thanks in advance.
Buds. Other
Other. Mold
3y ago
4
4
Solved
6gelato9
They seem to me pretty tall and unstable what can i do to improve this
Week 1
Other. Mold
7y ago
1
1
Solved
NetherHeaven
White hairs on seed
Hello growers! I started germinating my White Widow seeds 3 days ago and there is some kind of white hairs growing from it but the seed is not cracked and there is no root yet. Why is this happening exactly? Should I worry?
Other. Mold
Other. Other
Germination. Paper
5y ago
2
2
Solved
ImIHighyes
Mold suspecting
Hi, this is my first amateur growing, I have 2 strains Bud Orange Auto and Skywalker Auto. I noticed a musty smell from my 2 plants, one is almost ready but the other one seems in stuck.. From the pictures, could you give me some advice if my plants are healthy or not? Many thank
Other. Mold
2y ago
2
3
Solved
Michael1234
nutrient deficiency??
is it a nutrient deficiency? she was watered once with TerraVega after transplanting and starting the vegetation stage
Other. Mold
Feeding. Deficiences
Feeding. Other
4y ago
2
3
Solved
malumalu
I am Having problems with humidity I already bought extractor of 220 cfm with 125mm downsized to a 100mm tube with a Carbon filtre of 190 cfm I bought a 75 watts 650ml/day dehumidifier I m watering less but more frequently and the Rh keep at 70% Please help me !!
Buds. Other
Other. Mold
Setup. Ventilation
3y ago
1
2
Solved
Faegrows
Is this normal or mold?
Is this normal color for orange critical punch? She is darker than last week at a few buds. I just want to make sure this normal or a form of mold or something. I'm harvesting her in 7 days. She is starting flush now.
Week 20
Buds. Other
Other. Mold
Other. Harvest - Drying
4y ago
4
2
Solved
Bembeto
Hojas raras
Algo le pasa a las hojas, no se si sera carencia o hongos. Me dan una mano?
Week 7
Leaves. Color - Dark-brown
Other. Mold
Feeding. Deficiences
4y ago
4
2
Solved
JayJou420
Mold?
its my first grow is this mold? im constantly at around 40-45% humidity no signs of mold on plant itself just at the top of the medium its biobizz if its somehow relevant and if its mold what can i do? i appreciate any help and sry for bad english its not my first language
Other. Mold
1y ago
1
1
Solved
greenflipcali89
How to treat (NOT prevent) Powdery Mildew on a flowering plant (week 4)?
Ok, here is a question to ALL growers out there. How do you remedy Powdery Mildew on a flowering plant? I gave her a major defoliation and sprayed the milk/water sol'n. So HOW do you treat PM? Milk/Water or H2O2/Water? Or?? Suggestions?
Week 12
Buds. Other
Other. Mold
5y ago
2
4
Solved
NewgrowerG
Hey guyz. She is a northern light growing outside in her 20th week. She is almost ready but in a few buds of her she seems like deteriorating. I touch her and parts stick on my hands and fall off. Is this mould? And what should I do? Can I clean the mould in a way and smoke it or
Other. Mold
3y ago
6
8
Solved
Daddypool89
mold or something else?
Just dried gorilla glue and went to trim some more of the leafs off before i started curing and while inspecting the buds i seen little white strings inside the bud, looks like it could be in early stages of mold and if it is what should i do?
Other. Mold
4y ago
2
Solved
Nachtjasmin
Schwarze Spitzen und Flecken nach Neemöl-/Kaliseifenbehandlung in der Dunkelphase. Schimmel? Dran lassen oder abschneiden? Bitte um Hilfe!
03. November: Zu Beginn der Dunkelphase, einen Mix aus 200ml Wasser mit 2ml Neemöl, ein Schuss Rapsöl und 4ml Kaliseife, auf die Pflanze aufgetragen. Grund dafür ist ein Befall mit weißer Fliege. Alles habe ich nicht aufgetragen. Heute sehe ich schwarze Flecken. Ist das Schimmel?
Week 3
Leaves. Color - Black or grey
Other. Mold
10mo ago
1
7
Solved
FourTwenty_Plants
Powdery Mildew
I got some powdery mildew on 1 of my plants any Ideas what would help to get rid of it? Kinda scared to spray some random shit on them cause of the fact that they are in flowering phase
Week 14
Other. Mold
Setup. Outdoor
1y ago
8
5
Solved
Erasmus
Best way to control humidity?
I have a 4 inch inline fan blowing in air at the bottom, I have a 4 inch inline fan sucking air out the top and a 4 inch fan to circulate air inside and a large 300 foot air dehumidifier in the tent but my humidity is still 50%-60% constantly. What am I doing wrong?
Week 7
Other. Mold
5y ago
3
Solved
HighRoller909
Mold on coco surface. Mycelium?
Should I worry about the white mold on coco's surface? I had them before in my grows,never seen any damage caused by it but still a question in my head. humidity %60,direct air blowing to the plants,watering every other day,temps 27-28C.
Other. Mold
5y ago
2
3