Help! Clawing in flower. 2nd grow in Coco.

I'm not sure what is going on but my 2 bigger plants just look super unhappy. If anyone has an idea on what may be going on any input would be super helpful. Strain is an og cross. I'm using dyna gro bloom nutes with cal mag. Lighting with bloomspect LEDs 85w per light per 2x2 ft. I have one looking great. I repotted 2 of them. I'm thinking I'm under watering them only watering twice daily. It's a coco grow so I feel like I should be watering around 3 times a day for bigger plants. Or perhaps the temp drop in the evening is throwing the pH off in the substrate, messing with nute uptake. I'm not quite sure but any help would be greatly appreciated. Thanks all!

Looks like a ph issue, too cold & humid or possibly low oxygen in the root zone(oversaturated).

furnz said:

Looks like a ph issue, too cold & humid or possibly low oxygen in the root zone(oversaturated).

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I think you're right on. I think bc it drops more than it should at night I'm getting some pH issues in 2 of them. If they're oversaturated and I'm watering 3 times daily do I just water less each feed to minimize this? I know growing in coco is hydro so I need to water frequently to prevent salt buildup. What could I do to resolve this issue?

Could also be light intensity. Notice the lower fan leaves appear to be perky but all the upper fan leaves look a little sad, they might not like the light intensity. Raise or dim the light or supercrop the tall tops. Could also be oversaturation, water 1x day to good runoff, i bet that'll also help.

What size container? Do they look more perked up a couple hours after watering?

It's pretty hard to overwater in coco, especially once a good root is established, and in flower. I auto water 5 times a day with mine. 4 during lights on, 1 lights off. I use 5 gal fabric containers.

Do you let the containers sit in runoff?

Hollatchaboy said:

Do you let the containers sit in runoff?

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I do not. I clean it out manually emptying everything out into 5 gallon jugs. The pots they're in are only 3 gallons on 2 of em and 1 gallon for the little one. It's just what I had around. My last grow I flowered 1 plant in a 5 gallon and got 200 grams off of it. I figure the bigger the pot the bigger the plant the more times you should water. I watered 3 times daily last grow which is what I'm confused about bc I'm hearing so many different things. Mainly folks thinking I'm overwatering bc of the temp drops and pH changes not allowing the plants to eat properly and not letting enough oxygen to the root zone. Maybe I should up waterings. More frequent but less runoff perhaps? I'm at about 20% most feedings. They look a little sadder today. Par is about 770 or 30,000 lux. Ppms 700. Dyna grow bloom nute with cal mag. I hope I can get them squared away before harvest. I hope they make it to harvest. I had such bedder luck last grow bc I had better evening temps for sure.

Look.... this is my plant....


She gets watered 5 times daily. 4 times lights on, once lights off. 5 gallon container. I get between 20-30% runoff on each one. Straight coco, no perlite. Granted she's a big girl, and drinks a lot, but if mine can take 5 waterings a day, yours should handle 3, I would think.

Check your run off ec/ph. Ill bet it isnt near close to whats going in.

Hollatchaboy said:

Look.... this is my plant....
View attachment 5271286

She gets watered 5 times daily. 4 times lights on, once lights off. 5 gallon container. I get between 20-30% runoff on each one. Straight coco, no perlite. Granted she's a big girl, and drinks a lot, but if mine can take 5 waterings a day, yours should handle 3, I would think.

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This was my last plant. She was a big one and my first one and she was super healthy. I made mistakes for sure but my evening temps were alot better along with humidity. I think perhaps you're right that I'm not watering enough but I also think that bc of temp drops in the evening and me having no way to water after lights out other than turning all the lights out and making a mess, all my pH values are different after testing runoff. I use very little perlite but I do always feed to runoff.

agare$969 said:

This was my last plant. She was a big one and my first one and she was super healthy. I made mistakes for sure but my evening temps were alot better along with humidity. I think perhaps you're right that I'm not watering enough but I also think that bc of temp drops in the evening and me having no way to water after lights out other than turning all the lights out and making a mess, all my pH values are different after testing runoff. I use very little perlite but I do always feed to runoff.

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She looked good, but you chopped her a bit early. She probably would've bulked up more, if you had gone another few weeks or so.

What's the differential between day and night temps and humidity. My humidity sits around 40% right now. Temps around 80-81 lights on, 73-75 lights off.

What EC is going in?
What EC is coming out?
What temps lights on?
Is there air circulation?
What PH going in only?

Oh and is it only 85w light in the 2x2??

bandit08 said:

Check your run off ec/ph. Ill bet it isnt near close to whats going in.

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It was a actually a little higher in runoff of the one. The 2nd one was right on and the smallest one was about 5 so it was off the most I think. But the smallest one looks the healthiest. Tbh I think I'm not feeding as many times daily as I should be and that's why they're droopy up top bc my feeds aren't providing enough sustenance to the entire plant. The lower leaves Look fine.

Hollatchaboy said:

She looked good, but you chopped her a bit early. She probably would've bulked up more, if you had gone another few weeks or so.

What's the differential between day and night temps and humidity. My humidity sits around 40% right now. Temps around 80-81 lights on, 73-75 lights off.

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Yeah It was a bummer. She def could've went longer but due to time constraints I sort of screwed myself but it still turned out to be really top shelf bud. It honestly got me a lot higher than a lot of the dispensary bud around my area. Not tooting my own horn at all. If it weren't for the great minds on this forum I wouldn't have made it to harvest. My daytime is anywhere from 80-85 and my nighttime is always around 60-65 unless I put a heater in the closet my tent is in which I hate doing. I'm over east so it still gets pretty cold at night over here. Humidity daytime is around 40-50%. Nighttime is around 20-30

agare$969 said:

It was a actually a little higher in runoff of the one. The 2nd one was right on and the smallest one was about 5 so it was off the most I think. But the smallest one looks the healthiest. Tbh I think I'm not feeding as many times daily as I should be and that's why they're droopy up top bc my feeds aren't providing enough sustenance to the entire plant. The lower leaves Look fine.

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Its not because you aint feeding often enough. I feed once per day with no issues. Lower your ec by a couple of points and keep pouring solution through them until what comes out, matches whats going in.

Check future run off twice a week to make sure its close to whats going in. If it comes out with higher ec then you need to lower your feed. If it comes out slighly less than input, your on the right track.

If the EC swings so does the PH.