New grower growing in happy frog soil. Been noticing brown spots popping up on lower leaves working the way up the plant. I always ph water to 6.5 with Blue lab ph meter. On week 3. I starting feeding GH nutrient line and calmag once I noticed the brown spots. Started on a light feed schedule. Using RO water ppm of feed was 600. I used MAG AMPED as an foliar spray last night before lights out. Any info would help????? Temp and humidity been stable.
Help!!!!!!
- Thread starter Vince9898
- Start date
have u ever seen this before? Do you think is a mag deficiency?
greenmobster440
Well-Known Member
Certainly looks like magnesium. Your on the right track. A little mag boost in the mix and the foliar will prob help. I remove old damaged growth. No need to let it rot on the stem.
Your in soil so seeing results will typically be slower. I like organic growing but once an issue occurs you have to be patient.
Totally understand the first time grower excitement. You get in your mind...hey it's just a weed. Well, that is true..lol. However, on sites like this many have broken down growing this weed into a science project. It can get mind boggling and confusing. Basics never change so always best to stick with them.
Soilless grow mediums like coco or peat are much easier to manipulate. Maybe consider that option your next go round.
Being a new grower your gonna make mistakes. Try not to freak out and over think or over treat a plant in need. Read, read, and then read more. There is so much info it makes a head spin. The folks here will help. We've all been there.
Instead of CalMag. Perhaps some Epsom salt. Not sure of dose. Plenty of info here on site to figure that out.
Your in soil so seeing results will typically be slower. I like organic growing but once an issue occurs you have to be patient.
Totally understand the first time grower excitement. You get in your mind...hey it's just a weed. Well, that is true..lol. However, on sites like this many have broken down growing this weed into a science project. It can get mind boggling and confusing. Basics never change so always best to stick with them.
Soilless grow mediums like coco or peat are much easier to manipulate. Maybe consider that option your next go round.
Being a new grower your gonna make mistakes. Try not to freak out and over think or over treat a plant in need. Read, read, and then read more. There is so much info it makes a head spin. The folks here will help. We've all been there.
Instead of CalMag. Perhaps some Epsom salt. Not sure of dose. Plenty of info here on site to figure that out.
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Jjgrow420
Well-Known Member
Prob has something to do with the pH. The elements are likely all there just not available for the plant to uptake.
I'm not a fox farms fan, but there are some people who use it here but I'd say about 95% of the threads I read about FF are always the same issues
MickFoster
Well-Known Member
Not a magnesium deficiency.......looks more like a calcium deficiency.
thank you for the info. Greatly appreciated. I was told to leave old growth on being the mag is a mobile nutrient so the old leaves even though drying out and Browning could still transfer nutrients to newer growth?
even though it’s starting on the lower growth?
MickFoster
Well-Known Member
Your problem doesn't even resemble a magnesium deficiency.
This is a mag deficiency.
And this is a calcium deficiency.
i totally agree with you. The only thing that has me stumped is calcium def starts at top newer growth from what I’ve been reading. Mag starts on old leaves. Let me get you better pictures of all the affected leaves.
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amneziaHaze
Well-Known Member
How to fix Cannabis Calcium Deficiency (Ca) Pics & Symptoms
Calcium deficiencies cause tiny brown spots that appear on new and middle growth. Learn how to fix this problem for good!
www.growweedeasy.com
How to fix Cannabis Calcium Deficiency (Ca) Pics & Symptoms
Calcium deficiencies cause tiny brown spots that appear on new and middle growth. Learn how to fix this problem for good!
Ok I got it……… I’m gonna go with calcium deficiency for sure. So there was 2 options in there.
1- flush soil add more cal-mag.
2- use dolomite lime. What would u recommend? And by flush what are they meaning? Like a big flush like the one before harvest? They are in 5gal so run about 15 gallons through them? Seems much easier to just add this dolomite lime?
For anyone that can use my mistakes. I’ll keep updating until hopefully harvest. It’s been 3 days.
things I’ve changed-
Upped my cal-mag from 2ml/gallon to 4ml/gal
1 foliar spray of mag amped
raised lights 6 inches from canopy so I’m sitting right around 28in
Here is the girls today. Brown spots are definitely slowing way down.
things I’ve changed-
Upped my cal-mag from 2ml/gallon to 4ml/gal
1 foliar spray of mag amped
raised lights 6 inches from canopy so I’m sitting right around 28in
Here is the girls today. Brown spots are definitely slowing way down.
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Cultiuana
Active Member
Based on your information, here's a breakdown of your situation:
Symptoms:
Symptoms:
- Brown spots appearing on lower leaves, moving upwards.
- Plants are in week 3 of growth.
- Using Happy Frog soil, RO water, and GH nutrient line with calmag.
- Recent foliar spray with MAG AMP.
- Nutrient deficiency: Brown spots could indicate a lack of magnesium, calcium, or potassium.
- Nutrient burn: Feeding 600 ppm solution in week 3 might be too strong for young plants.
- pH imbalance: Although you're adjusting the pH of the water, the soil pH could be out of range.
- Light issues: Excessive light intensity or light burn can cause brown spots on leaves.
- Double-check soil pH: Use a soil pH meter to confirm the soil pH is within the ideal range (6.0-6.5).
- Adjust nutrient strength: Decrease the nutrient concentration to a range suitable for young plants (around 200-300 ppm).
- Monitor light intensity: Make sure your lights are positioned at an appropriate distance from the plants.
- Flush the soil: If you suspect nutrient build-up, flushing the soil with plain water can help remove excess nutrients.
- Consider foliar feeding: Foliar feeding can be a quicker way to correct nutrient deficiencies.
- Monitor closely: Continue to observe your plants and adjust your feeding schedule and environment as needed.
greenmobster440
Well-Known Member
Excellent recovery..your on your way to a great harvest!
DirtyJerzey
Well-Known Member
Looking great man! I get the yellowing tips as well. Towards the end of her life she'll start pulling nutrients and stuff from your fan leaves. Also a good indicator of nearing end of run.
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That looks AMAZING!!!