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 QuestionsCal mag ??

Cal mag ??

Student_of_Sciencestarted grow question 2 years ago

Should the cal mag be half as well ? And how long does it get added?

Solved

Feeding. Deficiences

likes

Chow_13answered grow question 2 years ago

Are you using RO water or distilled water? If your using tap water then chances are you wont need it and if you do then only 1/8 - 1/4 the amount recommended MAX. If your using water with less then 100 ppm then yes, you want to add 1/4 -1/2 recommended.

1 like

Complain

Selected By The Grower

Similar Grow Questions

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

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

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

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 What do you think the deficiency is in the last picture?

Feeding. Deficiences

8 months ago

5

5

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

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

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

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

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.

Leaves. Color - Mottling

Feeding. Deficiences

a year ago

12

5

Solved

BavarianBarbarian

Nitrogen Toxicity?Not sure if this is nitrogen toxicity or normal leaf color. Crinkling was caused by too much light and the fan. Got better in 24h after adjusting grow light and fan. Plants are starting week 2 of veg, Hulkberry Auto. Medium is light mix soil.

Leaves. Twisted

Plant. Other

Feeding. Deficiences

9 months ago

4

3

Solved

Can I fix a nitrogen deficiency with more terra tripart nutrients or do I need something else?My Double Grape is showing signs of what looks like a nitrogen deficiency. My Ph is 7, temps 25c, humidity 40% and watering 1l every 3rd day. Does anyone know if I can increase my nitrogen my adding more of either micro, grow or bloom from the terra tripart range?

Leaves. Color - Yellow

Feeding. Deficiences

9 months ago

6

2

Solved

Nutrient Deficiency?Do you think the way my Mimosa and Apple fritter look there’s a major deficiency going on with them?

Leaves. Color - Yellow

Leaves. Color - Pale

Feeding. Deficiences

9 months ago

9

3

Solved

BudmanFlyingjoint

Strange discoloration The plant is becoming less green, more yellow, dark green/blue, and the tip seems necrotic. She received a little more light intensity (TS1000 at 50cm, 25%dim to 50%dim) when she was repotted on the final DWC. T.A. (Growing on FeedChart) was used to create the nutrient solution.

Leaves. Veins - yellow between

Leaves. Color - Dark-purple

Feeding. Deficiences

10 months ago

1

3

Solved

Grey leaf tips Booth plants are showing some kinds of burn and I am not sure if it is nutrient burn or light burn or if there is something missing. Looks a bit like MG deficite but shouldn't the plant take that from the soil in that state and age?

Leaves. Color - Yellow

Leaves. Color - Black or grey

Feeding. Deficiences

10 months ago

5

5

Solved

LSD Auto BarneysFarm is showing nutrient deficiency. I need some help to get this girl unstressed.I'm using BioBizz LightMix with the BioTabs Starter Kit in 25L pots (prepared the medium from the beginning with 3 biotabs). I have three girls where 2 of them are running healthy, only the LSD Auto is making trouble. How can I fix the problem which you can see on the image?

Feeding. Deficiences

3 months ago

4

3

Solved

Ph value is decreasing despite BioBizzUp I don´t get it I´m trying to increase the Ph value but it is permanently falling again to a value of 4,2. Any idea what could be the reason why my Ph adjustments (BioUp) are not taking effect in the soil. Additional question for SD: What to do with the brown leafes? Remove them?

Feeding. Deficiences

2 months ago

8

Solved

Definecy or Overwatering or something other?Hello guys! I think somthing is going bad. I attach some photos from the problem and also attach a full watering note. In a nontrained plant the leaves is curling down. I also have a diarie from the growth. Can anybody help me to fix this problem? Thanks and big up.

Setup. Strain - Autoflowering

Feeding. Deficiences

3 months ago

1

6

Solved

some kind of deficiency?👋👋👋 is this some kind of deficiency?

Leaves. Curl down

Leaves. Other

Feeding. Deficiences

3 months ago

3