What are these leaves telling me?

Please help identify issue.
The plants these leaves are from are about 7 inches tall.
They are in one gallon coco pots, watered with RO water and H&G nutes (currently about 880ppm).
The temps are normally upper 70's and RH at 70ish.
Sitting under area51 led's (sgs-160).

Thanks

Do your H&G nutes have cal/mag in them?

7 inch plants, full strength nutes. theres your problem buddy. Those plants prolly shouldnt be getting any more than 400PPMs right now. In veg, 4 to 500 PPM will carry you through veg. and 200PPM should be straight calmag.

Youre fryin em!!!!! Too much nutes. Dont give them any nutes for at least a week. Then just give em the calmag at 200PPM and thats IT. MAYBE a drop of superthrive per gallon.

Looks more like a root/ph/lockout problem to me.

Got a pic of the whole plant?

I would say severe nute burn at those ppm levels. For seedlings you want 1/5-1/4 strength.

Phosphorus deficiency

You guys are gonna kill this guy. Look man. Those plants arent ready for all that yet.

I'mSimplyStoned said:

7 inch plants, full strength nutes...
Youre fryin em!!!!! Too much nutes. Dont give them any nutes for at least a week. Then just give em the calmag at 200PPM and thats IT. MAYBE a drop of superthrive per gallon.

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I'm using half of what their calculator suggests plus some calmag.

Picture added.

What's your pH

joespit said:

What's your pH

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Ph between 6.3-6.5

PH is fine... I cannot see all too well, how is the new growth of those plants?


Are you looking at soil less directions? Theres recirculating and drain to waste hydro instructions too. Youre doing drain to waste? Maybe it was just too much at the time but thats a lot to be giving them. Just in my experience. lol I am going to keep watch of this because id like to know what else it could be.

Yup. Roots. Nailed it.

Quit over watering

JJ43 said:

I'm using half of what their calculator suggests plus some calmag.

Click to expand...

Stop using the cal-mag. H&G base nutes contain plenty of Ca and Mg also when using RO. If you do get deficiencies just raise the ph to 6.0-6.2 for a few days. If you do not use the Coco AB base nutes you should add some cal because of coco buffering cal too much. For coco I use 400-600ppm H&G, usually at the low end of that range.