Yellow spots.

[Belle]

Seemed like everything was going fine. It's about 30 days old. Attempting living soil, but in 5 gallon pots. I've only given it compost tea so far. I'm wondering if I need to give it some flowering nutes possibly?

 

[Belle]

I read that it might be an issue with the soil. Virus etc. Ended up adding some h2o2 to the water before last nights watering. Yellow spots are worse today.

 

[ManWithWrench]

I got spots like that on my first grow but it was from water droplets on the leaves when I watered. The water drops were like a magnifying glass for the light.

 

[Belle]

I got spots like that on my first grow but it was from water droplets on the leaves when I watered. The water drops were like a magnifying glass for the light.

Hmm, I don't think that's the issue, but I'll definitely be careful that I keep water off the leaves when watering. It could be. Thanks for your input.

 

[jdot]

Gettin some red stems too....

 

[Belle]

Just googled red stems. As usual, so many possible reasons. Direct light, fluxuations in temps, temps too high, lack of nutes, nute lockout.

I pH my water to 7 or lower. Temps are from 70ish lights off to 85 lights on. I've only been giving them teas, although I cut them when I saw the spots.

I'm guessing/hoping it's from LSTing them and it's the direct light from the light. Light is turned all the way up, but I've moved it as high as possible.

Any ideas? @jdot

 

[browncoat]

What kind of light(s) are you running?

 

[Belle]

What kind of light(s) are you running?

LED - HLG 600H. I had it about 30" away, but it seemed like the tips were starting to burn so I moved it all the way up as high as it would go. Now about 41" away at full strength. On 20 hours, off 4. 70F lights off, 85 lights on.

 

[browncoat]

Going off what I heard from a podcast guest I trust, rust spots like that when using LEDs are possibly due to lack of calcium, as LEDs can make your plant require extra calcium. I'll see if I can link the episode, it's a fantastic one I have listened to it 3 or 4 times already.

 

[BII]

A few spots on a single lower fan leaf, looks like not affecting new growth, and quite possibly just from water droplets -- I wouldn't worry, unless it spread.