Yellowish spots

Hey i was wondering whats going on with a couple of my plants at first i thought it might have been them getting 2 hot but the 2 bigger of the plants dont seem to be having it so im thinking maybe nutrient burn? pH has been balanced constantly so i dont think its this but i have done a full reservoir change today and highered the light anyway, anyone got any ideas sorry about the photo



id appreciate any insight

Are you growing hydro? DWC?

If so, you shouldn't be adding nutrient yet in your water yet. Just cal mag if you're using reverse osmosis water. If you're using tap, just make sure the ppm is not over 300-400.

the curling looks like heat stress. I'm still a noob myself but I came into the same problems at the beginning of my grow. my nute burn didn't look the same. on mine, the tip of the leaves curled up and the tip became yellowish and brownish. Your curling leaves look like heat stress to me

what kind of light are you using? and at what distance from the plant is it?

feeyoh said:

Are you growing hydro? DWC?

If so, you shouldn't be adding nutrient yet in your water yet. Just cal mag if you're using reverse osmosis water. If you're using tap, just make sure the ppm is not over 300-400.

the curling looks like heat stress. I'm still a noob myself but I came into the same problems at the beginning of my grow. my nute burn didn't look the same. on mine, the tip of the leaves curled up and the tip became yellowish and brownish. Your curling leaves look like heat stress to me

what kind of light are you using? and at what distance from the plant is it?

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im using 1/4 strength at this stage i gathered that doing 1/4 strength would be an okay move? so you reckon heat? alot of people saying heat just want to be sure

Looks over nuted AND like you get water spots on them while under the lights maybe???

Every drop of water becomes a magnifying glass--- and makes toasty spots!

no no no not atall that was only done when we took them out of the tent to change the reservoir theyve been on 24 hours light without anything sprayed on them, i can asure u there has been no drops of water on them whilest under the light

THLee said:

im using 1/4 strength at this stage i gathered that doing 1/4 strength would be an okay move? so you reckon heat? alot of people saying heat just want to be sure

Click to expand...

Would you be able to see your ppm? When I started I didn't have one and I was puting around 1/4 to 1/2 the quantity recommended on the nutrient bottles. I thought I was fine but once I got the ppm meter and starting to have curling tips, I finaly found out I was at 450 to 500 ppm. For small seedlings it's too much. So my advice is to try and get the ppm meter. Id avoids a lot of problems and it also tells you how much nutrients to give to the plant.

also, are you using organic or chemical nutrients?

I you want go see my grow journal, you'll see what I went through and see my nute burn

https://www.rollitup.org/grow-journals/642586-dwc-kings-kush.html