Whats Causing my this burn / death to fan leaves?

[Keykcm]

@Mañ'O'Green It’s Fox Farms ocean forest soil. I am feeding the plants just as listed on the feeding schedule for week 4 which is when I started to see issues. I’m mixing the nutes in one gallon of distilled water and measuring with a vivosun TDS meter Before I was feeding one gallon of feed but spread it out amongst a week. Meaning I feed .5 gallon x2 times a week but the feed was spread amongst all the plants. . I just fed one gallon worth of feed Amongst all plants with the same feed schedule. Only difference was I did not add the holy mackerel. And I added 1.5x the boomerang hoping to help the plants bounce back. Side note. Is it going to hurt the plants to remove the damaged leaves. Cutting them at a 45 degree angle close to the main stem?

 

[Mañ'O'Green]

You are running soil and it is better to think you are feeding the microbes and not the plant. Are you using distilled water on the water only days? Is your feed schedule water day, water day, feed day repeat?

 

[Keykcm]

@Mañ'O'Green distilled from start to finish. I just mix the nutes in a distilled gallon. Typical feeding is Saturday. And wed. And was feeding a total of a gallon per week. Now I think I’m gonna do 2 gallons per week unless that’s still not enough.

 

[bakEQuatorial]

I'm assuming you got adequate holes under the buckets? Next watering, wait till they're really light in weight before watering. Let them get dry enough for the roots to get some oxygen. Then water. No matter how long that may take, Just wait.

I suspect overwatering since plastic buckets dry much slower. This means the bottom roots are always wet, resulting in a variety of issues including pH and lockout. However it seems very early and should be fine if let dry out. The reason I suspect overwatering is the clawing tips I see on some lower fan leaves. Unlike a whole leaf drooping, this usually means overwatering.

 

[Proph]

@Proph @Mañ'O'Green sorry for the @‘s. Just desperate for help. Gave a full strength one gallon feeding With 1.5x the boomerang in hopes of helping. spread amongst all plants today. Attached are photos a hour layer.

Sorry for the delayed response. The most recent pics you posted show that the plant is cannibalizing. Its using the stored food from the leaves to feed itself. The feed you just gave it should start to slow that process down. Whether or not it was the correct amount, only the plant can tell us. You'll have to watch it closely for a few days. The plant should stop eating through the leaves once it can access the nutrients you just fed it. It's not an over night fix. It will take a few days.

A change in leaf color at 5 weeks old is not expected or trivial. It's a sign that something is not right. In this case, it's under feeding. You can tell by the look of the affected leaves and by the feed schedule/ratios that were used. It should start to recover soon.

These are a couple of pics of a test plant that I have going right now. It's in a one gal pot and I purposely rarely feed it as part of the stress testing. When plants begin to eat through their leaves due to hunger, the leaves will have a nice even fade to them.. No brown rust spots, no tip burn.. Just the leaves fading from green to a dull yellow color.. The fading starts at the leaf veins and works it's way outward as you can see in the pics.. Still no rust spots or any other discoloration. Under feeding is one of the easier signs to catch because there won't be any spotting.

 

[Proph]

I also just noticed in the most recent pics that some of the leaves have rust spots and browning. That could still be from the lack of nutrients though.. I would pick a healthy leaf to watch that's close to a damaged leaf, and make sure it's not spreading.

 

[Keykcm]

@Proph do you feel I’m overwatering as well like @bakEQuatorial mentioned? Also how many times a week should they be fed? Feed then water then feed? Or one gallon per feeding x2 a week?

 

[Proph]

@Proph do you feel I’m overwatering as well like @bakEQuatorial mentioned? Also how many times a week should they be fed? Feed then water then feed? Or one gallon per feeding x2 a week?

If you were watering as you described in your posts, then I can't see over watering being an issue.. Unless it's a situation like BakEQ described, and you don't have proper drainage holes.. But Im assuming you do.. When growing in soil, the most common feed schedule is feed (use nutrients), water (plain), water(plain), feed(use nutrients). The most common way to water, is daily, using the 10% rule, which is 1 gallon of water per every 10 gallons of soil. So a 5 gallon pot should be watered or fed every day with a half gallon of plain water or mixed nutrients. Keep in mind that these are just guidelines.. Every plant is different and every environment is different. That's why watching the plants signals is so important. You can always check the ppm of the run off, and compare that to the ppm of your feeds.. At week 5-6 I'd say the ppm of the run off and feeds should be around 450ish.. If it's significantly less than that, that will confirm the under feeding.

 

[Keykcm]

@Proph thank you I appreciate all the insight from you and everyone here. So I’ll continue with the feedings and waterings as you said and keep an eye on the plants. My last two questions for now I suppose will be.
Am I good to continue feeding at full strength nutes using the feeding schedule provided. During veg I read that it’s not recommended to feed at full strength using fox farms. And once in flower the plants can handle full strength.
Lastly. Should I remove the dead /dying leaves from the plant. Cutting them close to the main stem?

 

[Mañ'O'Green]

What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and roots there will die. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering.