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My indoor grow room is in about 64 degree temperature, and I'm unsure of the humidity. I'm around week 4ish. It is in DWC ppm level is about 312, and the ph is around 6.15. I'm using general hydroponics. This is under a 450 watt vioarspectra led. I thought at first maybe light burn, so I moved...

Is this a reliable drug test, and is it negative?

What's this new growth on top of this cola? It looks like it's going back to veg on this secondary cola, but there is absolutely no way their is light leakage. For one, it's a sealed grow tent, and two, I have the light cycle go off at night.

I recently had a nutrient burn problem, which I addressed by switching reservoirs and lowering nutrient ppms from 700ish down to about 500. My plant leaves seem to be yellowing. I noticed this morning that somehow the ph had dropped to about 4.1! So I brought it back up to the regular 5.5-6.3...

I recently had a nutrient burn problem, which I addressed by switching reservoirs and lowering nutrient ppms from 700ish down to about 500. My plant leaves seem to be yellowing. I noticed this morning that somehow the ph had dropped to about 4.1! So I brought it back up to the regular 5.5-6.3...

Hey guys. I'm 7 1/2 weeks into flowering with this pure landrace sativa Durban Poison, and I'm wondering if anyone might be able to tell how much more time this plant may need. It's under a 450 watt LED grow light, with two 100 watt supplemental lights. It's being grown hydroponically.

Durban Poison about 4 1/2 weeks into flower. The leaf edges seem to be turning a bit brown.

Hey my plant is very sativa dominant. It's durban poison. I'm in the second week of flower, and I was just wondering about how much longer it will be stretching for.

I'm growing this Durban Poison sativa in a 5 gallon bucket with 3 gallons of water. I'm using distilled water with general hydroponics nutrients. I'm putting 1 1/4 tsp of hydro bloom, gro, and micro into the solution. The ppm is 300, and the PH is 5.7. I'm using a 450 watt led vipar spectra...

I went from seedling nutrients 1/4 tsp per gallon to mild vegetative 1tsp per gal with General Hydroponics, and the plant seems to be being nute burnt, so I flushed and lowered nutrients. I am growing in a 5 gallon dwc Bubbler filled with 3 gal of water now with about 1/2 tsp of flora micro, 1/2...