First Grow - Can't Tell What the Problem Is

Pabloelduro

Member
Hydroponic Grow

How long has this problem been going on?
5 days
Where are you growing?
Indoor Mylar Tent
What system are you running?
RDWC
What STRAIN are you growing?
I mixed up the seeds so it could either be Acapulco Gold or Girl Scout Cookies
What was the establishing technique?
Seed
What is the age of your plants?
22 days
How long have they been in there mixture they are in now?
5 days
How tall are the plants?
What PHASE are the plants in?
seedling
What substrate/medium are you using?
Hydroton
What is the Water temperature?
67F to 73F
What color are your roots?
White
What Nutrient's are you using?
GH
How much of each nutrient are you using with how much water?
4 mL each of GH Flora series - Grow, Micro, and Bloom. 20 gallon system
How often are you feeding?
Once every 7-10 days. Only one feeding since transplant to final grow space so far.
How often are you giving nutrients?
Once every water change (every 7-10 days)
What order are you mixing your nutrients?
Recommended Micro, then grow, then Bloom
What is the TDS/EC/PPM you are using?
TDS is 298 PPM
What is the pH of the "Tank"?
pH is 6.3
How often are you testing your pH/PPM/EC/TDS?
Every 2 days
Are you sure your calibration is correct on your equipment?
Yes
What is your RH Factor(Relative Humidity)?
Between 48 and 56%
What is the canopy temperature?
Between 70F and 78F
Is your water HARD or SOFT?
This first feed, I used tap water. I will be using RO water from the 2nd feeding going forward.
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?
298 PPM out of the tap

Problem: I am running an RDWC with 2 pots and a reservoir. One plant is Girl Scouts Cookies (GSC), the other is Acapulco Gold (AG). I didn’t label the rockwool cubes before adding the seeds, so I could have these two girls mis-labeled. The issue that I am having is with the GSC-labeled plant. It is 22 days old and the growth seems to be stunted. It has not grown in 5 days, since I transplanted them to their final grow location. I added GH Flora series nutes at ¼ of the suggested amount to my reservoir in the proper order. My GSC-labeled plant is showing leaf tips that are turning white on the first set of true leaves. The second set of leaves appear pale green and seem to be yellowing a bit. The third set of leaves have not grown in 5 days, and I see a brown color in when I look at the node where the leaves are coming out of.

I recently added Hydroguard to my reservoir at the recommended dosage (2mL/gal). I plan on running the system RO water, 250 PPM of Cal-Mag, and the recommended dosage mycorrhizae (1 tsp/10 gal) at the next water change (in 3 days).

Any help on how to fix would be great.Day 17_GSC.jpgDay 22_GSC.jpgDay 22_AG.jpg
 
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