The Grow Awards 2026 🏆

Back to Grow Questions

Are this brown pots a lack of potassium, and could it be caused by us giving to much Calmag?

bluecakestarted grow question 2y ago

We also discovered more brown spots on the leaves. You can see it on some of the pictures. We believe it might be a potassium deficiency, because we maybe added a bit too much calmag in the end? Todays feeding round we didn't add any calmag, and we hope it helps.

bluecake

bluecake

bluecake

Open

Feeding. Deficiences

likes

Answer

Todzillaanswered grow question 2y ago

Probably a little nutrient lock out causing a calcium deficiency. IDK why you add cal mag for soil. Coco - yes, soil, no. Check and calibrate meter Check ppm /ec under 2.0 Check ph (soil 6.5) Calibrate those meters!

likes

Complain

Todzillaanswered grow question 2y ago

Probably a little nutrient lock out causing a calcium deficiency. IDK why you add cal mag for soil. Coco - yes, soil, no. Check and calibrate meter Check ppm /ec under 2.0 Check ph (soil 6.5) Calibrate those meters!

likes

Complain

Todzillaanswered grow question 2y ago

Probably a little nutrient lock out causing a calcium deficiency. IDK why you add cal mag for soil. Coco - yes, soil, no. Check and calibrate meter Check ppm /ec under 2.0 Check ph (soil 6.5) Calibrate those meters!

likes

Complain

Todzillaanswered grow question 2y ago

Probably a little nutrient lock out causing a calcium deficiency. IDK why you add cal mag for soil. Coco - yes, soil, no. Check and calibrate meter Check ppm /ec under 2.0 Check ph (soil 6.5) Calibrate those meters!

likes

Complain

Similar Grow Questions

Solved

Leaves turning yellow from the bottom up My older plants leaves are turning yellow from the bottom up. Its probably a nitrogen deficiency I think, I read that its common for plants in late flower but this one just shot its first pistils. What would be the smartest thing to do to combat this? Thx Its only on 4 leaves rn

Leaves. Curl up

Leaves. Color - Yellow

Feeding. Deficiences

6y ago

4

3

Solved

sad plants do my plants look sad? why??? Under-watering? been watering every 2 days on most sometimes can get away with 3 days i believe? am i wrong

Plant. Wilting

Feeding. Deficiences

5y ago

11

8

Solved

Leaf marks, LST and deformed.. is good, no? :D Expert, I need your advice! ;) 1.marks on leaves.. I've spotted some brown marks... is sign of juice burning? :P 2.there's another mark.. more dark color.. maybe was me managing them.. :P 3.LST.. was not good, right? :D 4.the little deformed.. should I keep or remove it?

Leaves. Other

Plant. Other

Feeding. Deficiences

6y ago

1

1

Solved

Magnesium I am a bit worried about the early oranging of the flower pistols, I have adjusted cal mag should I continue as normal and put progression down to pre existing deficiency now showing down the road? Certain branches/budsites showing amber pistols in first couple of weeks of flower

Feeding. Deficiences

3y ago

1

3

Solved

SirSmokeALot333

Deficiency / harvest Hey all can anyone tell me what this is? Looks for my something like cal mag or lockout. But I don't know now, should I feed her 1-2 more times or should I just give her water now I think she gonna get rdy in 2 weeks. The deficiency starts from top to bottom.

Leaves. Tips - Burnt

Feeding. Deficiences

5y ago

2

2

Solved

Strange leaves I'm not sure this is nitrogen deficiency or not... Just seems different

Leaves. Color - Yellow

Feeding. Deficiences

4y ago

7

7

Solved

Lst and slow growth I want to start LST on my babies, it’s my first time with this stuff, so i want to know if its the right moment. Gorilla is the tallest right now, but she’s growing slowly and probably with some deficency that i cant understand (any advice is welcome!!) Is she ready to lst?

Feeding. Deficiences

Techniques. LST

6y ago

4

3

Solved

I'm not experience in growing and this is my first plant. I'm still worried by the yellows of young shoots. Can someone help me recognize the problem ? 🙏 All suggestions will be valuable. 👍

Leaves. Color - Yellow

Feeding. Deficiences

6y ago

7

3

Solved

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

Buds. Other

Plant. Other

Feeding. Deficiences

5y ago

1

2

Solved

Xtreme gardening products and botanicare compatibility Is cal-mag the same as cal-carb. I currently have Xtreme gardening products. Azos,mykos,and Mykos wp. I can't seem to find if I can use it with botanicare cal-mag and silica blast . I'm using 70% coco coir 30% perlite. I've read silica and cal-mag are good to use so down the road

Other. General questions

Feeding. Deficiences

Feeding. Other

2y ago

4

2

Solved

Flushing How do I flush my plants ? I am worried I will be over watering them.

Feeding. Deficiences

5y ago

3

3

Solved

Nutrient burn symptoms?I may have slightly burned my plants based on the burnt tips. But do tiny brown spots near the tips also mean the same thing? Also some leaves are not completely greening out:s I know I’m not over watering the pot either. And they are getting cal/mag. Also grown in fox farm soil.

Feeding. Deficiences

5y ago

2

Solved

First time coco grower Hello guys, first time growing in coco I’ve been feeding them 0,7 until now at 5.8 ph and today I added 1.2 ec and the runoff was 5,6. It’s been 3 weeks now and they’re not growing that well I’ll feed 6,5 next feeding. Can someone tell me if this is a calmag deficiency ?Anytips?

Leaves. Curl down

Leaves. Color - Yellow

Feeding. Deficiences

5y ago

5

6

Solved

cal mag plus can I give this during flower ? using happy frog soil and heavy 16 nutrients.. getting some yellowing 2nd week into flower

Feeding. Deficiences

6y ago

2

2

Solved

Leafs yellowing What can this be? It happened in 1 day. Is plant asking for nuts? I added only water for 4 days because i was afraid of been giving to much nutrients. Could be a pH problem?

Leaves. Edges burnt

Leaves. Color - Yellow

Feeding. Deficiences

6y ago

1

1

Solved

THERMICDESERT11

What’s wrong with my plant? Root rot?Growing organically with happy frog mixed with a super soil concentrate. I water them with spring bottle water, ph at 7.7. Recharge every 10 days. Top dress 2-2-2 dry amendments. Plant looks like it has root rot or potassium deficiency. Please tell me what y’all think

Feeding. Deficiences

5y ago

2

2

Solved

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

What can I crank my nutrients up to in this stage and hat schedule I am currently running low level nutrients and want to know if I can amp up any specific N or K or both right now in veg and push the plants. What can I change my nutrients/feeding schedule to in order to give the girls a boost?

Feeding. Deficiences

4y ago

3

3

Solved

PALE LEAVES + YELLOWING + BLACK SPOTs Check the pictures OGS. 100% organic, water PH: 6:3 all along. Aloe/coconut + FF Big Bloom. I'm leaning towards a nutriment lock. I was able to correct another issue a couple of weeks ago with flushing. But still I need to feed them, it's too early for water only. What do you thi

Leaves. Dropping off

Leaves. Color - Pale

Feeding. Deficiences

1y ago

3

2

Solved

Nitrogen Deficiency Due to Flush???hello colleagues, because of my own stupid I hurt my Orginal cheese automatic,I gave her too much fertilizer, then I had to do FLUSH two times Ip poured her with water, the leaves started to turn yellow, is it a shortage of Nitrogen?

Feeding. Deficiences

Feeding. Other

5y ago

6

3