Having Issues

I'm having issues with this plant. I use PHd water at 6.5. I took a soil sample earlier today and mixed it with water, let it sit and measured PH at 6.8. The new growth is yellow all on the top of the canopy. Lower growth seems Ok. They are in a 2x4 tent under 400w timber lights. The temps range from 74-79 during the day and 71-68 at night they're in week 2 of flower and I'm starting to get concerned about this plant. I thought it was light burn at first and have been researching like crazy. Any help is appreciated

They are transitioning to preflower / flower ... It happens as hormonal changes happen.
Let her set up her budsites. Continue with a VEG feed until around week 3 of flower , she will need to store nitro and will use this also for stretch . Then around week 3 start bloom nutes 1/2 strength and move up or stay as she grows.

This is where some growers fuck up by giving bloom nutes too early. Let her do her thing.

Thanx Budz, I was researching and thinking zinc issue. I also feel like I'm overthinking it as well this is only my 3rd grow just need to slow it down a bit lol again I appreciate the input

Are you adding any calcium? I doubt it would be zinc, that would show up In the middle of the plant. Calcium or iron are more likely to show up on the new growth.

I add 2.5ml of cal-mag every other feeding but I also use tap water. Always read that with tap water cal-mag wasn't needed?

Should I up the dose to 5ml ?

Slight iron def. IMHO.
Once had a similar problem.I added a rusty paper-clip into my water container for a few days then watered it in. Just the one watering and it recovered very quickly.

Nice I have a bunch of rusty nails laying around appreciate the reply

Are those freshly transplanted?

Lonely Boner said:

I add 2.5ml of cal-mag every other feeding but I also use tap water. Always read that with tap water cal-mag wasn't needed?

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Only some tap water. I would suggest eventually getting at least a carbon filter for your water, IME tap water can lead to problems depending on your local water of course.

phunt said:

Are those freshly transplanted?

Only some tap water. I would suggest eventually getting at least a carbon filter for your water, IME tap water can lead to problems depending on your local water of course.

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No they've been in those pots for I'd say at least 5 weeks now. They're fabric pots

I have added cal-mag @ 5 ml with foiled feed as well. At this point do you guys think I need to flush now while it's still early flower?

Lonely Boner said:

I have added cal-mag @ 5 ml with foiled feed as well. At this point do you guys think I need to flush now while it's still early flower?

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foiler