yellow edges on young plants

I am using GH Nova Bloom Grow with well water with a hardness of 304. Mixing per label results in PPMs of 1200 plus. My ideas are nitrogen deficiency or nutrient burn. Any ideas?

Looks like Burn to me, that nova is strong stuff...

I have also found the "suggested" mix on most labels is to hot and I back off...

I'd flush and recharge at half Nuts, let her grow a little and then remove the damaged leafs...

fill out the troubleshooting form in my signature.

-shake

Lookʻs like Nute burn, not a N deficiency. Like Shake said fill out the Troubleshooting form, youʻll get alot more replies and advice.

Iʻd say flush well and skip your next feed for a phʻd water feeding, then give emʻ half strength on the following feed!!

Thanks much for your guidance and the format for filling in the blanks that I didn't! BTW, we did flush solution and cut back nutrients to 1/10th stength plus we've been foliar spraying with Karma... yellowing affect not spreading upward.

What is your experience level? first timer

Your Equipment:
.1) Type and wattage of lights. Advanced LED panel 3 Watt
.2) Distance from tops? 8-10 inches
.3) Reflector type? Enclosed LED panel
.4) Is there a consistent fresh air supply? Yes
.5) Do you have an exhaust fan and a circulation fan? Yes
.6) What are the bulb wattages, kelvin ratings, and schedule? 3 Watt per bulb, 350 total wattage... 24 hours on

Your medium:
.7) Specific brand and type of soil Sunleaves Rocks
.8) Size of container. 8 inch net pot in DWC
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? Grow cube

Your nutrients and water:
10) Source of water? Well water What's it's ph before adjusting? 8.7 ph
11) Method of checking water ph. Constant monitor
12) Method of adjusting water ph. PH down
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. GH Nova Bloom-Grow @ 1tsp. per gallon... Roots are fogged (haven't reached nutrient level)... Ten minutes every three hours into pot
14) How often are you watering between feedings, and how much per watering? NA - ten minutes every three hours into pot
15) Any additives or tea's? No
16) Are your ph levels stable, or do they fluctuate? Stable
17) What is your ingoing water's ph? ...your runoff ph? 6.1 in and 6.2 out
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? Yes, with Karma one quarter strength 2-3 times per day

Your growroom:
19) Indoors or outdoors? Indoor Box
20) What size of closet, room or hut? 2X4X6 feet
21) What are the temps and humidity levels while lights are on? ...With lights off? Temp is 85 (high) on... NA - 24 hour schedule... Relative humidity is 35... CO2 supplementation... 1200 ppm high reading, 850 average reading
22) Have you seen signs of insects in the growroom? No

Your strain:
23) What strain are you growing? The Church
24) From seeds or clones? Seeds
25) Is this an autoflower strain? No
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1200 ppm is very high for that small plant. Also from looking at the form... Your ph should be a tad bit lower, around 5.8 in.

You should be fine after you flush and lower the nute str and adjust your ph accordingly.