The Grow Awards 2026 π
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
Steeluk1987
Will she be ok
Should I worry or should she be ok, watered with plain pH 6 water 81ppm runoff 221ppm no further burn but will this slow her down and as I'm sure it was bloom nute that caused the burn should I even bother with p/k in next few weeks if she can't handle bloom and buddy?
Week 7
Feeding. Deficiences
6y ago
1
Solved
nevermore
How much water for 4 week old plants in 3 gallon pot - 24β from light?
My question may be the most basic of all. This is my absolute 1st time growing and am wondering how much water I should be giving my 4 week old plants on any given feeding? They are under a 150 watt led light - 24β from plant.
Feeding. Deficiences
5y ago
4
7
Solved
Foggedaboudit
Nute burn or N deficiency or what?
Nute burn or nitrogen deficiency or else?
Feeding. Deficiences
3y ago
2
7
Solved
ganzigunnu
deficiency?
hi folks, is this calmag deficiency or what? its week 7. i always added 0.2 ec calmag to the solution. why im getting this now? maybe i need more of it. its only in one of the plants.
Week 7
Leaves. Color - Yellow
Feeding. Deficiences
3y ago
2
3
Solved
Newbie87
Feeding
Is it okay to water with bloom again after her last feed, or should it just be water ? Her leaves are looking brown at the top.
Week 9
Feeding. Deficiences
3y ago
3
1
Solved
AlienScrOG
She Is Reborn ..,. Tell me of u see a wrong do
Week 19
Buds. Other
Plant. Stem - Red or purple
Feeding. Deficiences
6y ago
1
1
Solved
Foxtrotoscar
Overwater?
Hi People Just started some NYC Autos. 3 part coco&coir 3 part compost 1 part perlite 1 part vercumilite I watered generously as I heard coco drys out quickly but I seem to have over watered as they have stunted growth especially for just hitting 14 days old. Anybody any ideas?
Week 9
Feeding. Deficiences
5y ago
1
1
Solved
VividGreen
New growth gets lighter in color
Looking at the pictures you can see new growth on both plants is getting lighter in color each day. Iβm thinking nitrogen, maybe? Complete day by day photos are in the diary. Thanks
Week 5
Feeding. Deficiences
3y ago
7
12
Solved
Zellybelly
PH IN DWC fluctuation
How to maintain PH at 5.8 and not fluctuate so much and from swinging in DWC it starts at 5.8 and always end up 2 days later at 6.3 how can I stop this fluctuation from happening ?
Feeding. Chemical composition
Feeding. Deficiences
5y ago
5
4
Solved
Michael1234
too many nutrients?
I am asking for advice, is it possible that my plants got too much fertilizer. I watered them in the fourth week, I gave them 0.5ml per liter once CalMag, Bio-Bloom, TopMax, Fish-mix,Biobizz then during the 7th week 1 ml per liter CalMag, Bio-Bloom, TopMax, Fish-mix,Biobizz
Week 6
Feeding. Chemical composition
Feeding. Deficiences
4y ago
2
4
Solved
Maryjane23
Carenza
Ciao ragazzi cosa dite una carenza di N??
Week 9
Feeding. Deficiences
5y ago
4
3
Solved
BadGrower
GH Floranova bloom only, for Autoflowers? Ratios, PH issues . (Water in 6.5)
What is a good feeding amount for autoflowers? Using GH Floranova bloom and Im attempting to do something like the lucas method but for autos IN SOIL. I know they are sensitive to nutrients and ive been having issues with my PH runoff. Info about this on the web is inconsistent.
Feeding. Schedule
Feeding. Deficiences
4y ago
1
Solved
GronkLeague
Nitrogen/magnesium deficiency?
Please can someone take a look at this?does this look like a nutrient deficiency? I'm growing in coco and haven't used any nutrients until today(Day 22)... From what I've read online im missing nitrogen or magnesium. The plant is yellowing from the bottom up and is a light green.
Week 3
Feeding. Deficiences
6y ago
3
3
Solved
roro_204
Yellow/ Lime Leaves ????
I have 3 grow rooms. I moved all the deficiency plants to 1 room. The whole half of the plant is turning really light yellow/ Are my lights too close to the plants ? Or is my feed to low?
Leaves. Color - Yellow
Setup. Lighting
Feeding. Deficiences
4y ago
4
3
Solved
Hiphopopotamus33
Possible deficiency?
What's going on with my girl? This has been a continuing problem throughout my grow and I'm stumped.
Feeding. Deficiences
6y ago
3
Solved
4ako4ako
some kind of deficiency?
πππ is this some kind of deficiency?
Leaves. Curl down
Leaves. Other
Feeding. Deficiences
1y ago
3
Solved
GreenBeanGrowMachine
black Dots and bugs ?
She has small black Dots on the lower leaves , also some small White bugs OR larves visable. What are these and can i still do anything about it or is it top late. Will they Hurt my Harvest ?
Week 10
Other. Bugs
Feeding. Deficiences
6y ago
3
3
Solved
HappyLobster
What to do after overfeeding and a flush?
I've been overfeeding, did a flush, and now I'm not sure what to do as she has been hanging for a few days. Full details are in my diary. Any help is much appreciated :)
Week 4
Feeding. Schedule
Feeding. Deficiences
3y ago
2
2
Solved
Laxguy420
Nute lock or nute deficiancy?
had some yellow leaves start to pop up on one of the girls. Looks like a nute lock that we will address with a PH water flush and then slowly wrk them back up onto the feeding schedule. Didn't check my Ph and my guess is Ph went too high in the soil.. Thoughts from my gurus?π
Week 8
Feeding. Deficiences
3y ago
6
5
Solved
FoxGrow
Autos reacting to All-Mix: Slight nitrogen overload?
Pheno one showed very "leathery", weak, hanging leaves of dark green. Same time the fungus gnats had a run and the population doubled. After second LST also the stronger plant showed those signs on the younger upper leaves. Also curled down a little. Slight nitrogen toxicity?
Week 3
Leaves. Curl down
Feeding. Deficiences
2y ago
2
1