Jsteven4253 said:

Hi guys, first time grower.
Growing jack herer auto from seed in a dwc (cash crop). I have 2 Plants that are around 3 weeks old and starting to notice brown/rust colored spots on some leaves and drooping. So far seems to affect both old and new growth. One plant seemed to get this early and the plant was doing ok but I'm now noticing spots on this one too.
Grow info:
Medium: hydro dwc/ clay pellets/organic start plug
Temp: 65- 80 F
Humidity: 40-55 RH
Light cycle: 18/6
pH: 5.8 - 6.0
Nutrients: 4ml ea. pH perfect micro/grow/bloom
2ml hydroguard

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Aqua Man said:

Also any leaves laying on the hydroton or buckets, remove them. They will not transpire and will die.

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Aqua Man said:

Do you have a ppm meter I think your nutrients are way to high.

Pictures of the roots?

Brand and distance of the light?

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Jsteven4253 said:

Thanks for replying. Just picked up a TDS/EC meter. Here are the readings I got measuring the reservoir directly
TDS: 250ppm
EC: 550 us/cm

Here's a pic of the roots. Not sure it's root Roy or if it's nutrient stain.

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Aqua Man said:

While doing that do a res change and add 200-300ppm of nutrients and double dose of hydrogaurd before putting it back in.

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Jsteven4253 said:

Thanks will do. I have the water set to be just at the base of the pot.

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