Vote Now 🏆 for the Grow Awards 2025!

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

Recommended

Recommended

Grow QuestionsDoes anyone know what this is ? There's two d...

Does anyone know what this is ? There's two d...

Mammophstarted grow question 4 years ago

Does anyone know what this is ? There's two different kind of spot, some appear randomly on new leaves, brown and small. And the other kind appear on older leaf, on the veins only, I changed my nutrients schedule since my plant just started flowering, and i'm not accurate ig

Mammoph

Mammoph

Mammoph

Open

Leaves. Other

Feeding. Schedule

Feeding. Deficiences

likes

Answer

GMSgrowsanswered grow question 4 years ago

Check your runoff water for ph and ec levels. You need to be around 6.5 ph and 1.8 ec, 900 ppm to 2.0ec, 1000 ppm. Cheers

likes

Complain

Similar Grow Questions

Solved

Stresst es Pflanzen sehr, wechseln von LED zu Sonne Ich wollte mal fragen ob jemand Erfahrungen gemacht hat seine Pflanzen bei schönem Wetter raus zu stellen und bei normalem ins Zelt unter LED. Gibt es da negative oder positive Erfahrungen von euch? Ich habe ca.65k lumen unter der LED und die Sonne bringt es so auf 120k lumen...

Leaves. Other

7 months ago

2

2

Solved

Nutes Deficit - Yellow lower leaves and yellow tips. What to do?

Leaves. Tips - Die

Leaves. Color - Yellow

Feeding. Deficiences

7 months ago

3

1

Solved

Damaged leaf. Cut or not?This particular leaf is heavily damaged by sunburn and the leaf miners are having a go at it. Should I trim it off or let it do its job until it dies completely?

Leaves. Other

7 months ago

5

5

Solved

Green light spots on the leaves Greenlight spots on the leaves in the 7th week. What is that? Any help is appreciated. Thanks

Leaves. Other

7 months ago

5

Solved

Runoffs are significantly below inputs-Do I have a problem?Runoff continues to be a mystery. When watering I continue to get significantly less Ph and PPM (4.8 ph and 109 ppm) than my inputs (6.2 ph and 155 ppm) but the plant looks healthy. I have no idea what is going on or if its even a problem. Should I be worried and what can I do?

Feeding. Deficiences

7 months ago

6

4

Solved

Are CBD-Strains less nutrient-hungry?Hey Guys, i experienced that these strains like a lower EC/TDS. Every time i went over 1.2 EC (600ppm TDS) they showed signs of over-nutrition, like very dark green leaves and reddish brown leavetips. What are your thoughts on this? Are CBD-Strains less hungry on nutrients?

Leaves. Other

7 months ago

1

Solved

First Grow General Feedback Hello Growers OG Kush 80x80 90cm 26.4°C 54% Every 2 days ~2.7 liters CANNA Flores 15ml, Rhizo 10ml, Zym 13ml, Boost 10ml (next 20ml Flores, 2,5 Rhi) Yesterday defoliated, Flower D14 While I dont have a specific question, I would greatly appreciate any general feedback Thanks

Other. General questions

Feeding. Schedule

Techniques. Defoliation

8 months ago

2

1

Solved

What deficiency is this ?What is happening to my plant right now ? I believe it is calcium deficiency also could be Manganese from the pictures. I did not add CalMag during the first weeks. Usually Calcium deficiency shows after 4 weeks and during flower but not likely in soil. Started around 6th week

Leaves. Color - Dark-brown

Setup. Strain - Autoflowering

Feeding. Deficiences

8 months ago

5

3

Solved

Day 11 - Yellowing tips, pale color, slow-ish growth Germinated in jiffy pallets - good seedling stage, put them in 2L Pots with LightMix on day 7. 26° avg temp, 60-78% humidity, watering 150ml when top soil dry with 6.7 pH, BioBizz Root Juice & Bio Heaven so far. Bilberry Mini 160W at 40cm distance and 25% power. Why yellow :(

Leaves. Color - Yellow

Setup. Strains - Photoperiod

Feeding. Schedule

8 months ago

2

3

Solved

Deficiency?! Please help with weird Leaf signs :(This Plant didnt have any problems in This whole run. Sinne 1-2 Weeks she started showing These weird signs and i cant figure out what it is. I thought it could maybe be phosphorus deficiency or something. Got a lot worse in the Last few days! :((

Leaves. Color - Dark-brown

Leaves. Other

8 months ago

1

Solved

notice any nutrient deficiencies or toxicity ?Hi guys, I was wondering if you could tell me if you notice any nutrient deficiencies or toxicity auto 25° /55%rh / ts1000 distance 60cm 75%power 40 dli (photone) feed two days ago and still wet with 700 ml 0.5ml bllom Budcandy 1ml 1ml rhinoskin 0,5 calmag Ph 6.4

Other. General questions

Feeding. Deficiences

8 months ago

1

3

Solved

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?

Leaves. Curl down

Feeding. Deficiences

8 months ago

2

1

Solved

Deficiency because she starts to flower? Leaf tipps light green. Some purple at the stems.I have not fed her, just a bit here and there. So I do believe she starts to need her medication. Its going to the end of preflower week1. Symptoms: some light tipps and some purple at the stems. Solution: feed her P and K. could add some CalMag ? Or Still feed more NPK?

Leaves. Color - Yellow

Setup. Strain - Autoflowering

Feeding. Deficiences

8 months ago

4

4

Solved

Suspected Nitrogen Deficiency Noticed yellowing leaves at the start of Week 3. Suspect nitrogen deficiency. Using Cal-Mag, Alga Grow(NPK 4-2-4), and Power Roots(NPK 0-0-2) at half the recommended dosage. PH is measured at - 6.5.

Leaves. Veins - yellow between

Leaves. Color - Yellow

Feeding. Deficiences

8 months ago

2

2

Solved

Leaves+stem drooping, stems did turn purple - caused by climate change? or watering problem?what should I do? history: 21.05. Water with full dose of fertilizer ... 26.05. Soil really dry - Water with half dose of fertilizer 27.05. Plants look super healthy (24°C 55-60%RLF) 28.05. started to droop (27°C 40-45%RLF) 29.05. even worse, (25°C 45%RLF), surface still moist

Leaves. Other

Plant. Stem - Weak

Plant. Stem - Red or purple

8 months ago

3

Solved

Is 1 dripper enough per plant?

Setup. Substrates

Feeding. Automatic systems

Feeding. Schedule

9 months ago

3

3

Solved

[Newbie] Auto Blueberry first grow. Nutrients already in soil. When(if) to feed her ?Its the second week and I havent fed her yet. Does she look healthy ? How do I know when or if i should feed her ? Using Royal Mix Soil & Potting Soil. The mix should have nutes for 6 weeks. I do have some terra aquatica 3 part, bio bizz tripart and calmag

Setup. Strain - Autoflowering

Setup. Seedling

Feeding. Schedule

9 months ago

2

1

Solved

Brown spots on top leaves - nutrients, light or something else?She went into flower, now stretching. Set light to 100%, added Bio-Bizz Top-Max and Bio-Bloom (1ml/L each). 3 days later brown spots appeared on top fan leaves, very few also on lower fan leaves. I suspect this could be light burn or nutrient related. Any ideas? Pls help

Leaves. Color - Yellow

Leaves. Other

9 months ago

8

3

Solved

Idk what's wrong Can anyone help me figure out what's wrong with this baby? Special queen photo, week 8 of veg, organic pellet fertilizer added directly in soil. Always watered just water, seemed so healthy till last week, then leaves started yellowing a bit.. Nutrient deiciency/excess? Wdy think

Leaves. Color - Yellow

Feeding. Deficiences

Techniques. Topping

9 months ago

2

Solved

Magnesium deficiency looked for similar cases in grow questions and now think it’s a magnesium deficiency. I use biobizz Calmag 0.5-0.8 ml/L like in guide. Last week 1 ml/L. but magnesium deficiency does not go away, Question for biobizz users, how much Сalmag can be used before overdose?

Feeding. Deficiences

9 months ago

5

8