The Grow Awards 2026 🏆

Back to Grow Questions

Nute lockout or deficiency? Flush with Florakleen @ week 10 ok?

jokggastarted grow question 5y ago

I am running 4 gal autopots on 50 Coco/Perlite with Jacks 321@80% strength (800PPM), up from 650PPM previous week. Have been seeing curling and leaves dying although the bottom area is green. Res/Tray@ 6PH/800PPM. Coco slurry @6PH/800PPM. Temp 81, RH 55% Should I flush?

jokgga

jokgga

jokgga

jokgga

Solved

Leaves. Curl up

Leaves. Color - Yellow

Leaves. Color - Mottling

likes

HighAltitudeOrganicsanswered grow question 5y ago

Try dropping you pH to the low end of the recommended range (5.7) Looks like you’ve got an N lockout or some type of salt build up even though you said it’s not a bottom up yellowing issue. I would flush. Good luck

1 like

Complain

Selected By The Grower

Similar Grow Questions

Solved

Why are my leaves turning yellow Why are my leaves turning yellow? pH 6.5 before watering and similar from run off. I saw some Thrips could they be the reason?

Leaves. Color - Yellow

5y ago

2

Solved

Whats the issue here? Been feeding once a week but increased to twice a week thinking she was hungry. PH 6.5 water. In Pro-Mix HP Mycorrhizae which has no nutrients in it. Picked off the dead yellow leaves before I increased food.

Leaves. Color - Yellow

4y ago

1

4

Solved

LEAVES dying. Cause???What's the problem here?

Leaves. Curl down

Leaves. Color - Yellow

4y ago

1

6

Solved

Please help Hi is this a ph lockout or nutrient deficiency any help

Leaves. Tips - Burnt

Leaves. Curl down

Leaves. Color - Yellow

5y ago

4

4

Solved

my biggest-plant is going yellow in the center, is that a deficiency or normal? I was going to give it the first feed of fish mix tomorrow with 125 ml of water

Leaves. Color - Yellow

Feeding. Deficiences

6y ago

2

3

Solved

Too much fertilizer?High, i´m a little unhappy about the yellow Leafs. It´s week 5 of Flower, 20 Liter Shoes (Plagron Terra Light Mix), 2,5 Liter Water all three Days with Plagron Terra Bloom 4ml, Sugar Royal and Green Sensation 2,5 ml (like Shedule), Ph 6,2-6,5. What can i do?

Leaves. Color - Yellow

Feeding. Deficiences

4y ago

1

1

Solved

Late flower leaf discoloration What's up with these leaves? Night temps get down to 62-64F. About week 7 or so of flower. Giving 1/4 fox farm flower nutes every other watering, calmag or ph water in between. Day temps in high 70s low 80s.

Leaves. Color - Yellow

5y ago

3

2

Solved

can you tell me what is going on with leaf on pic 3 ?! thanks

Leaves. Color - Mottling

7y ago

1

Solved

Deficiency or Nute Lock?I was a told a week prior I was feeling too much. So I stopped. I left town for 4 days and came home to the current photos. One looks like nitrogen deficiency, the other looks like calcium deficiency except I've fed 1tsp of tiger bloom, .5tsp of Cal-Mag and big bloom last week.

Leaves. Color - Yellow

Feeding. Deficiences

Feeding. Other

4y ago

3

3

Solved

Am I right that the brown spots on one of the plants are an indication of calcium and/or magnesium deficiency? I ordered some CalMag Extra from Advanced Nutrients; should arrive soon. Would/should I apply this only one time or add to the regular feeding schedule?

Leaves. Color - Mottling

7y ago

5

2

Solved

How this plant can be more vegetatively?Hey guys I have this plant for 1 month right now but I don’t know why the vegetation is not like what she should be : the variety is scout girl cookies , how can I fix this thanks

Leaves. Curl up

Plant. Too short

Plant. Stem - Weak

5y ago

2

5

Solved

Should i harvest twice (half top first then bottom) or only once time?

Leaves. Color - Yellow

8y ago

30

2

Solved

Nutrient burn, magnesium def, light burn? Leaf tip yellowing but not turning brown/curling 4 week since planted autoflower, both started getting this at the same time. First time running autos, grown in FF Happy Frog soil. Soil was used for 3 weeks in a different grow so nutrients may be needed. Light burn, mag deficiency? Have only used ph 6.2-6.5 water, no nutrients.

Leaves. Color - Yellow

4y ago

1

1

Solved

BigBeautifulWeed

Rust leaves What's this symptom? Is spreading in one plant on eight, same condition and nutes.

Leaves. Color - Mottling

6y ago

3

3

Solved

Are these blotches calmag deficiency?

Leaves. Color - Mottling

5y ago

1

1

Solved

What could be causing this?I'm experiencing yellowing, browning and crisping on some leaves, but only on the main colas so far. I have checked the PH in and out. In has always been perfect, but the PH of the run-off was 5.8 so I'm flushing to rule out nute lockout. Anything else it could be??

Leaves. Edges burnt

Leaves. Curl up

Leaves. Color - Yellow

5y ago

3

1

Solved

How can I fix this lack of nutrients?My current feeding water consists of: 1. 20 l of water 2. 40 ml of Canna Coco A 3. 40 ml of Canna Coco B Leaves definitely show something is wrong. What would you recommend to fix this?

Leaves. Color - Yellow

5y ago

4

3

Solved

Starplatinumsrealdad

Yellowing and Reddening of older fan leaves I’m experiencing a lot of yellowing that progresses into dark red blotches. I suspected a possible cal mag deficiency but after upping the dose multiple times I’m still having issues. Any recommendations on possible causes/treatments? Temp stays between 74-76, humidity around 60%

Leaves. Color - Yellow

Leaves. Color - Red or pink

3y ago

5

3

Solved

Yellow leaves Hello everyone.My plants are in 5 week and yellow leaves and patches appeared a few days ago.Whats wrong with them? Also how do they look to you for 5 weeks.Thank you

Leaves. Color - Yellow

3y ago

1

Solved

Yellowing lower leaves Yellowing lower leaves. Is she just hungry for npk? Or is it a different issue? Any opinions would be helpful

Leaves. Color - Yellow

5y ago

5

6