Is this a pH problem?

Greetings readers. Insert generic first time poster comment. First grow as well.

These plants sprouted the 16th and one has just began to show signs of leaf curling and some minor discoloration. The plants look night and day from each other and have had the same treatment from water etc. Here's the setup

600W MH light running @ 50% approx 2 feet from the growing plants
Water every time the soil is feeling barely moist, usually every 3 days.
Water is tap that is allowed to sit for 2 days in order that the chlorine bleeds off.
Grow medium is fox farms ocean blend with no changes.
No nutes thus far.

I'd really appreciate any advice. After this grow I'd love to give feedback to other newbies but atm all I can do is regurgitate what i've read. Best guess on this is pH problems? However the pictures do not depict whats going on. The first three pictures are the sick lady, the third is the other plant that has received identical treatment.

GrizzlyAdams said:

Greetings readers. Insert generic first time poster comment. First grow as well.

These plants sprouted the 16th and one has just began to show signs of leaf curling and some minor discoloration. The plants look night and day from each other and have had the same treatment from water etc. Here's the setup

600W MH light running @ 50% approx 2 feet from the growing plants
Water every time the soil is feeling barely moist, usually every 3 days.
Water is tap that is allowed to sit for 2 days in order that the chlorine bleeds off.
Grow medium is fox farms ocean blend with no changes.
No nutes thus far.

I'd really appreciate any advice. After this grow I'd love to give feedback to other newbies but atm all I can do is regurgitate what i've read. Best guess on this is pH problems? However the pictures do not depict whats going on. The first three pictures are the sick lady, the third is the other plant that has received identical treatment.

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What are your temps running?

wizardofaahs! said:

What are your temps running?

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My temps are pretty warm,
88-92F light
76-84 dark

I'm venting my grow area nearly as much as I can, the only other thing I can really do is run the reflector hood to the exhaust fan? If you check pic four that's another plant in the exact same conditions doing pretty well.

Humidity stays at about 30-45%

It might be a pH problem. In seedlings or very your plants, a wrong pH causes deformed growth, rinkles, even brown spots on lower leaves. Sometimes the pH balances itself out and all you end up with is just 2 misshapen leaves, which seems to be your case.

To be sure, check your soil pH.

GrizzlyAdams said:

Greetings readers. Insert generic first time poster comment. First grow as well.

These plants sprouted the 16th and one has just began to show signs of leaf curling and some minor discoloration. The plants look night and day from each other and have had the same treatment from water etc. Here's the setup

600W MH light running @ 50% approx 2 feet from the growing plants
Water every time the soil is feeling barely moist, usually every 3 days.
Water is tap that is allowed to sit for 2 days in order that the chlorine bleeds off.
Grow medium is fox farms ocean blend with no changes.
No nutes thus far.

I'd really appreciate any advice. After this grow I'd love to give feedback to other newbies but atm all I can do is regurgitate what i've read. Best guess on this is pH problems? However the pictures do not depict whats going on. The first three pictures are the sick lady, the third is the other plant that has received identical treatment.

Click to expand...

Hi, I've used the Ocean/Forest and found it's pretty good all by it's self i.e. no pH issues and yet it has quite a bit of nitrogen available right off the bat which might be a jolt for a new transplant or start. Also, don't get the idea that any bagged soil has nutrients for longer than a month or two. Add to that frequent watering and you get a lot of nutrients rinsed out pretty quickly. You'll need to start feeding them sometime soon. Use the other Fox farms organics, they work great.
More importantly though, I think Ocean Forest holds moisture pretty well too. Because of that characteristic I wonder if your roots are staying a bit too moist with your watering pattern. Most plants like to have their root crowns dry out a bit between waterings. (avoids crown rot) So rule of thumb is to let the root zone dry closer to half way out, just letting the surface dry isn't enough. Plant roots need air too. Do you have a moisture meter? Get a decent one, over watering is the #1 reason people kill their plants of any kind.
Some synchronous plant thinking on the drying out thing... A plant that is geared to flower will be heavily stimulated to flower when it feels the 'end of summer drought' coming on as soils dry out, in tandem with the shorter photo period. Constantly wet roots tell the plant it's the 'rainy' season and even though all other conditions (light, nutes etc.) are geared to induce flowering the flowers will be fewer,smaller and lighter. Same thing happens to tomatoes, they'll actually drop flowers if they're too wet. Pot & Tomatoes do better if they stay a bit drier than wetter. Plants that sense a drought in their root zones go berserk flowering.
The plants don't look all that bad and the pH of a bagged product is usually close to perfect for most plants, I think it's just a little too soggy in the root zone.
Last thought, Increasing the lights' output to 100% will help move the moisture out of the root zone faster too. Assuming heat isn't an issue, the plants look big enough to take it. More Lumens = More production
Happy Gardening! GrowIT!

looks like your plant is starting to twist which means overwatering brother soil does look pretty soaked

scwascwa said:

looks like your plant is starting to twist which means overwatering brother soil does look pretty soaked

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And here I was, cocky as hell new grower. Promised myself I wouldn't overwater. Thanks for the advice guys, hope everything rolls gravy from here on out.

-Grizz