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Back to Grow Questions
Optimal pH for Vermic/Peat/Casting mix?
Overgrotho
started grow question 6y 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. Deficiencies
likes
blendmedmedman
answered grow question 6y ago
you want right around 6.3 as this is the happy spot. hope this helps
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Selected By The Grower
MangoDudu
answered grow question 6y 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
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GMSgrows
answered grow question 6y 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
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Similar Grow Questions
Solved
WulfBlud
Not sure about deficiency, thought was Calcium or Magnesium but not sure anymore.
The nutrient deficiency is back so I gave it another double dose of CalMag to see if that can stop it in its tracks but I am not positive if that is the specific problem. Added micronutrients mix as well to see if maybe that helps. Any suggestions would be appreciated.
Week 6
Feeding. Deficiencies
4y ago
1
3
Solved
Mosherd7
Unknown rust on 7th flowering week
This started as what I thought was a cal/mag deficiency, bought some, gave it for a week at a good dose and 6.3ph, and this intensified and switched from just lower leaves to the upper and a few sugar leaves on one plant. Any ideas? May calmag takes awhile? Or wrong diagnosis?
Leaves. Color · Dark-brown
Feeding. Deficiencies
6y ago
1
3
Solved
Overgrotho
Hot Soil
Is it true that hot (nutrient rich, in this case organic) soil can create nutrient lockout in seedlings? Next time I should only start in jiffy pellets or similar?
Week 1
Feeding. Deficiencies
6y ago
4
3
Solved
santope
Hello i add some new photos becouse im not sure what was with thoes plants...i see new grow leafs stars also getting yellow...what can be a problem...sulphure?
Feeding. Deficiencies
6y ago
3
2
Solved
CannaMom2
WHY?? Still looks like Calcium Deficiency?? HELP!!!
Can Someone Please tell me what is going on here? I have a detailed diary if you have any thoughts on why it still looks like a Calcium Deficiency. Plant looks healthy except this. First time for coco (bagged & prebuffered), grow dots, and wick bases so I am at a loss.
Week 9
Leaves. Color · Mottling
Feeding. Deficiencies
3y ago
12
5
Solved
RCD78
Transpiration issues
Hello I have issues with my ladies I have 4-5 weeks old 1 skunk #2 , 1 bluberry ghost OG , 2 gluberry OG I am having issue regarding transpiration I have over watered I would really appreciate advice on rectifying issue. Droplets of water on plant ? My plants look healthy
Feeding. Deficiencies
6y ago
5
4
Solved
UpInSmoke420
Cal mag help
I belive i have a calmag issue. Im using bio bizz calmag but im not sure how mich to use? Can someone help please?
Feeding. Deficiencies
6y ago
3
5
Solved
WorldPeas
Purple Kush Auto - Nutrient Lockout ?
Is she showing signs of nutrient lockout ? Been backing off the nutes to half strength now and last feed flushed with just ph'd water.
Week 4
Feeding. Deficiencies
4y ago
3
4
Solved
Otherland_Wildspice
Brown Spots On The Buds
Should I remove the brown spots on the Buds? What are they? (Maybe from overfeeding?)
Week 7
Buds. Other
Feeding. Deficiencies
5y ago
3
3
Solved
Tarzanus
Yellowing a bit too soon
During the second week, leaves started to look a little bit yellow. The first true leaves yellowed way too soon. I'm guessing lack of nutrients. It never showed signs of drought or overwater stress. Your thoughts? I planted it into larger 2.5 liter container now.
Week 2
Leaves. Color · Pale
Plant. Other
Feeding. Deficiencies
4y ago
2
2
Solved
Theboll
Leaves purple
Some leaves are turning purple, can you help me? I know My plant has some nutrients deficency and i am already using fertilizing
Feeding. Deficiencies
3y ago
1
1
Solved
Sugahmama
Brown Spots on leaves
Oh No! What deficiency is this? Pls help.. I watered her two last times with PH water only because the runoff was too high and now she show this signs. I think its a magnesium defi but I am not sure. Thanks
Leaves. Other
Feeding. Deficiencies
4y ago
1
3
Solved
WelshGrower
Not growing
Hi any help will be much appreciated..I am growing in coco/perlite mix however I'm unsure why they have stopped growing or are growing but very very slowly..could it be that I have not fed any nutrients at all to this grow?? Please advise
Week 2
Feeding. Deficiencies
6y ago
4
5
Solved
Dillsnills
Leaves are curling downward, help on what's going on and what to do is greatly appreciated
Trying to figure out what's going on, the leaves r curled down, ik I have too much nitrogen going on I moved the lights further away I'm watering it today jus pH water, advice opinions on what's going and what I should do is greatly appreciated. Temp 77f rh50%, ffof happyfrog mix
Leaves. Curl down
Setup. Strain · Autoflowering
Feeding. Deficiencies
5y ago
2
2
Solved
Bdawg
Seedling leaves slightly going yellow
Seedlings look abit yellow.wel I fink teo of them others dont look to bad. Light 125 watt cfl 15 Inch away Ph 6 5 Tap water ec 0.5 Bat mix soil with nutrients in it. Ec of soil 1.4
… Show more
Feeding. Deficiencies
6y ago
2
9
Solved
jwesty
What do I have going on here?
As you can see, the newest leaves are BRIGHT. She was flipped to flower 2 days ago, supplying her with calmag and grow big....is she lacking food? I have never seen such a thing.
Leaves. Veins · Yellow between
Leaves. Veins · Stay green
Feeding. Deficiencies
4y ago
4
3
Solved
ostrwahuio
Overfert?
I'm following the biobizz fertilizers schedule and watering the plant with 1/1,5 l every 4/5 days. Some tips of the leaves are yellow. Do I need to worry? How should I handle the situation?
Week 5
Feeding. Deficiencies
6y ago
1
2
Solved
einamio
Please help identify the cause, interveinal chlorosis since 2 weeks old, no necrosis so far. These two plants are 26 days old. Do they look stunned?
Is this magnesium def since it's going from the bottom? Is it possible the first signs started to show when they were just 2 weeks old? Or is this iron? Or is it smth else? Calmag given two days ago. Pistils show already. I water with ph6.2 but no runoff yet to know the soil ph.
Leaves. Veins · Yellow between
Setup. Strain · Autoflowering
Feeding. Deficiencies
2y ago
8
3
Solved
PeppaWutz
Lower leaves roll like tacos and have spots
Informations: 675 Watt LED light (1m distance to plants), 28 °C at day and 23 °C at night, 60% Humidity, EC 0.9, ph 5.7 Why did the lower leaves of my plant roll like tacos?
Week 3
Leaves. Other
Plant. Other
Feeding. Deficiencies
5y ago
2
2
Solved
TupacFR
Nitrogen ? Stretch
Hello I think my girlz need nitrogen , right ? I’ m in stretch , and if i miss that ... I work with nettle.
… Show more
Week 7
Feeding. Deficiencies
6y ago
2
3