The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Optimal pH for Vermic/Peat/Casting mix?
Overgrotho
started grow question 5y ago
Seeing as I am using 1/3 vermiculite 1/3 peat and 1/3 worm casting for these seedlings, should the optimal pH of the substrate be 6, 6.3, or 6.5?
Solved
Week 3
Feeding. Deficiences
likes
blendmedmedman
answered grow question 5y ago
you want right around 6.3 as this is the happy spot. hope this helps
likes
Complain
Selected By The Grower
MangoDudu
answered grow question 5y ago
I think your mix is not well done, so much vermiculite will ever overwater your plants, like u can see they are not full healty and not for ph problem. however 5.8 soiless is the right range
likes
Complain
GMSgrows
answered grow question 5y ago
Are you using soil at all? If it is a soiless mix then 5.5 to 6 ph in veg and 6.0 to 6.5 in flower. Cheers
likes
Complain
Similar Grow Questions
Solved
Reedius
nute burn or lack of?
Hey guys, Is it nute burn? Or lack of nutes? I gave them nutes on the 25/04. - 1,5 litres of water with 0,5ml of biogrow, 1ml of biobloom and 2ml of topmax by biobizz. I had given them 1ml of biobloom and 1ml of topmax on the 22/04. Soil is from compo sana. Thanks for the help
Leaves. Color - Yellow
Leaves. Color - Dark-purple
Feeding. Deficiences
6y ago
3
2
Solved
fish_ringer
HOW MUCH WATER I NEED TO FLUSH? (nutrient lockout)
my plant has nutrient lockout because of high ph (7.3-7.5). decided to flush with Flawless Finish. how much water needed to flush? i have 20l airpot. p.s. I watered them yesterday. when to flush? the strain is auto glueberry og - 4th week of flowering
Setup. Strain - Autoflowering
Feeding. Schedule
Feeding. Deficiences
5y ago
2
2
Solved
Igrowneil
Nearing harvest have problems need help quick
I've a few plants within the last few weeks 2/3 max and have to much N and P defenices what should I do next
Week 9
Buds. Other
Plant. Other
Feeding. Deficiences
5y ago
1
2
Solved
Edenoftheworld
Zinc deficiency?
My plant's top leaves appear thin and pale. My ideas are iron deficiency or zinc deficiency. I'm using RO water. The plant was recently aggressively trimmed of course. Should i flush with non-RO water to increase the zinc?
Feeding. Deficiences
4y ago
1
1
Solved
Flauros
Problems with feeding
Day 69. Input water: 260ppm, 30ml FloraKleen, ph 5.99. Output: 1st drainage: cbd 954ppm ,orange 1050ppm, Zkittlez 880ppm 2st drainage: cbd 660ppm orange 960ppm Zkittlez 880ppm Last drainage: Average drainage ppm 680, 6.22 ph. What ppm should i make ?
Week 9
Feeding. Deficiences
4y ago
2
1
Solved
ottoman
Brown spots on leaves
What seems to be the problem with my plant? The old leaves get brown spots whereas the newer ones have yellow edges. Is it a pH issue? Is there a fix to this? I grow in soil and the plant is 4-5 weeks old. Thanks for help!
Leaves. Color - Dark-brown
Feeding. Deficiences
3y ago
1
Solved
SweetJB
What am I facing? Plant is getting worst everyday, and I can't find the reason why. Thought it was a calmag def, but now I don't really now.
When I switched to flower, I started watching some rusty spots on the leaves of the gelato. After doing some research, I thought I was facing a calmag deficiency, and starting adding some calmag. Plant is getting worst, I flushed the roots and water between 5.8 and 6 as canna ask
Week 10
Leaves. Edges burnt
Feeding. Deficiences
6y ago
5
3
Solved
Dillsnills
Wondering if this is a pH issue or a deficiency? Started at lower leaves now starting towards the middle, advice on what to do is appreciated
Pretty sure I have some pH issues going on, looking for opinions on what's going on n what to do? I started pH water to 6.7 cuz my runoff was at 5.8-6,used growers recharge, then a nute feeding. Advice greatly appreciated rh50 temp73-76. Should I cut off affected leaves?ffhappyfr
Leaves. Color - Yellow
Setup. Strain - Autoflowering
Feeding. Deficiences
4y ago
2
3
Solved
BiagioTST42
Urgent help needed: wilting at wk3 STRAWBERRY LEMONADE (BARNEYS)
Plant is left one, 20 days old Evident wilting yesterday night (in trendy way since few days) -Soil (light mix) dry for 1 inch -Added 0,3lt of water with (ml: 0,45-Bio Rizhot. & 0,15 Org BAC) -PH checked IN & OUT: 6< PH <7 Minimal improvement SUGGESTIONS PLS? THANK YOU!
Leaves. Wilting
Feeding. Deficiences
4y ago
1
2
Solved
Dr_Rook
Qué carencia es?
Necesito ayuda! Quisiera saber si el clareo desde el centro que sufren mis plantas es carencia de hierro o de otra cosa. Si alguien lo sabe que me lo haga saber, por favor
Week 6
Feeding. Deficiences
3y ago
1
1
Solved
FarmerJon
Apricot Oreoz... the Unhealthy Runt
Does anyone have any experience with growing Anesia's Apricot Oreoz seeds? The plant seems to be experiencing a Cal-Mag related nutrient deficiency that the others are not. All plants are being grown under the same conditions. Any suggestions?
Week 2
Leaves. Tips - Burnt
Leaves. Veins - yellow between
Feeding. Deficiences
3y ago
2
2
Solved
Bigrobbud
Runoff
Week 5 flower.I had nute lockout .I think, I checked my runoff last week , it was at 2200ppm , So I just gave it water, checked today 4 days later. Runoff is at 1400 ppm. Should I give it water, or a feed of 800 ppm?
Feeding. Deficiences
5y ago
1
Solved
GrowerNL
Rust on leaves PLEASE HELP!!
Rust on leaves i water with pH 5,8 EC 2,0 i grow coco EC runoff 1,8-1,9 pH runoff 7,0-7,5 but pH runoff coco is not something to rely on i don’t use calmag want to use it since this problem i have given him some pK today
Leaves. Curl up
Leaves. Color - Dark-brown
Feeding. Deficiences
5y ago
1
Solved
buddhi_coop
Nutrients
Would you all use these together or am I supposed to choose one or the other? Week 4 of flowering
Buds. Other
Feeding. Deficiences
Feeding. Other
5y ago
2
2
Solved
FiFrElOt
Demande de diagnostic
Bonjour, je suis actuellement en semaine 7, mon problème dure depuis la semaine 5 et je n'arrive pas à l'identifier... Quelqu'un à déjà eu un problème comme celui la?
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
Feeding. Deficiences
4y ago
2
2
Solved
GhettoStyle
problems with clones!
Friends, tell me what's wrong with the plant! I don't understand it's under-feeding or over-feeding! At first I thought it was a cal-mag deficiency, then I saw a purple stem and thought it was a phosphorus deficiency! Now I don't know what it is anymore! at the very beginning it
Leaves. Color - Yellow
Setup. Clones
Feeding. Deficiences
3y ago
1
7
Solved
EasyRaider
NPK Problem? buds not devolping
Nitrogen Toxicity/Abundance, I believe is my problem. As suggested by BluntZilla in my other question it could be lacking P and K as well. Here are pictures under normal lighting in hopes that someone can help out.
Week 7
Buds. Not fattening
Feeding. Deficiences
5y ago
8
8
Solved
BobtheBUDbuilder
Whats going on?
So.. 6th week into it. My leaves have various brown spots and yellowing spots in no particular spot. There is some browning on leaf edges. Also tips are up. I am thinking cal mag and to much heat. But not sure. I lifted light up and so far nothing. Also started adding cal mag .
Week 6
Feeding. Deficiences
3y ago
2
3
Solved
SirSalami
First grow. Seems small. Barney's farm, Amnesia Haze Auto.
Just a first-timer looking for guidance during week 3-4 as she seems a bit small. If you have the time, please check out my diary. I'm eager to learn, have been taking daily pictures, and have been describing a few concerns there. I'll close this question tomorrow. Thank you!!!
Week 3
Plant. Too short
Feeding. Deficiences
3y ago
6
5
Solved
ColonelForbin1990
Brown spots on leaves! To Flush or not to Flush? That is the Question.
Hello, Seeing lots of brown spots developing around middle tier leaves. Reddit is telling me I should flush with 15 gallons of water to get rid of salts around the roots. That seems extreme but if that’s the cure I’d like to know more and can I use my tap water (7.1pH 133ppm)?
Week 5
Leaves. Color - Dark-purple
Feeding. Deficiences
4y ago
4
4