My first grow! I'm here to learn and have tried to use the resources identified in other threads to no success (yet, but I'm still looking!) so I'm hoping someone can help me out a bit as I get on my feet. I've posted photos from two different plants and strains exhibiting somewhat similar issues: yellowing at the tips of some of my bigger leaves that are situated in the middle of my plants (not the very bottom or very top, new leaves) and some spotting at especially the tips (first photo is an odd tinted green from the light coloration, not the plant, other photos are more accurately tinted):
The new growth especially at the top is a lighter shade of green, as if it's lacking a bit of Nitrogen. Some stems are purpling as if it's phosphorus, especially on the Crystal strain. In the crystal, with darker purple stems, I also see more red intravenous markings on the leaf, the leaves "pray" upward as if a nutrient burn is present, and they're dry:
In the trainwreck I see more small, brown spots that look like calcium deficiency. The leaf markings on the Trainwreck are not red or as big (they don't completely cover from one vein to the other, as they do in the crystal) but are instead smaller brown spots. I've given them some extra CalMag solution and a bit more of the Advanced Hydroponics Micro solution yesterday in the hopes it would improve. Photos below.
Problem for about two days now.
Gorilla 5X5
5-gallon bucket deep water culture with 10" aqualung air diffuser + air pump
One strain trainwreck, one is Crystal (both from ILGM)
Started from seeds
Vegetative stage. About 4 weeks since planting seed (planted in a plug)
They've been in the hydroponic system for about 3.5 weeks
Tallest plant is approx. 30"
Expanded clay medium
Water temperature is 76 degrees
Roots are white and clean
Using Advanced Hydroponics 3-stage (brown, green, and pink), and Cal-Mag
Per 4 gallons I'm using approx 3/4 cup bloom, 1/3 cup micro, 1/3 cup flora
Feeding weekly, washing down substrate daily, changing water weekly
Mixing in order of: micro, flora, then bloom
PPM between 800-900
PH is 6 but has been drifting down toward 5.4 by day's end
Testing using electronic meters, calibrated in solution and calibrated weekly
Watered last 5 days ago
Changed nutrients 5 days ago
Light is Hydroponic Lighting Group HLG 550, 1265 PPF, new bulbs
Light is 24'' from canopy
Humidity is 45% today
Temperature is 78 degrees today, controlled within +/- 2 degrees
400 CFM air flow, fresh air from outside tent pulled through and scrubbed on the inside of tent before exhausting out the tent
Fans blowing indirectly on plants
Water is neither hard nor soft
Water is 60% RO, 40% tap (de-chlorinated 24 hours with air diffuser)
Tap water is 140PPM, RO is 5 PPM
Plants have been pruned lightly
No chemicals used
No pest infestations
The new growth especially at the top is a lighter shade of green, as if it's lacking a bit of Nitrogen. Some stems are purpling as if it's phosphorus, especially on the Crystal strain. In the crystal, with darker purple stems, I also see more red intravenous markings on the leaf, the leaves "pray" upward as if a nutrient burn is present, and they're dry:
In the trainwreck I see more small, brown spots that look like calcium deficiency. The leaf markings on the Trainwreck are not red or as big (they don't completely cover from one vein to the other, as they do in the crystal) but are instead smaller brown spots. I've given them some extra CalMag solution and a bit more of the Advanced Hydroponics Micro solution yesterday in the hopes it would improve. Photos below.
Problem for about two days now.
Gorilla 5X5
5-gallon bucket deep water culture with 10" aqualung air diffuser + air pump
One strain trainwreck, one is Crystal (both from ILGM)
Started from seeds
Vegetative stage. About 4 weeks since planting seed (planted in a plug)
They've been in the hydroponic system for about 3.5 weeks
Tallest plant is approx. 30"
Expanded clay medium
Water temperature is 76 degrees
Roots are white and clean
Using Advanced Hydroponics 3-stage (brown, green, and pink), and Cal-Mag
Per 4 gallons I'm using approx 3/4 cup bloom, 1/3 cup micro, 1/3 cup flora
Feeding weekly, washing down substrate daily, changing water weekly
Mixing in order of: micro, flora, then bloom
PPM between 800-900
PH is 6 but has been drifting down toward 5.4 by day's end
Testing using electronic meters, calibrated in solution and calibrated weekly
Watered last 5 days ago
Changed nutrients 5 days ago
Light is Hydroponic Lighting Group HLG 550, 1265 PPF, new bulbs
Light is 24'' from canopy
Humidity is 45% today
Temperature is 78 degrees today, controlled within +/- 2 degrees
400 CFM air flow, fresh air from outside tent pulled through and scrubbed on the inside of tent before exhausting out the tent
Fans blowing indirectly on plants
Water is neither hard nor soft
Water is 60% RO, 40% tap (de-chlorinated 24 hours with air diffuser)
Tap water is 140PPM, RO is 5 PPM
Plants have been pruned lightly
No chemicals used
No pest infestations
