Hi KarlJay,
Ram horns can be an indication of over fert.
I noticed in your photo a bag of Miracle Grow soil.
Not sure if you know this, but those soils have time release ferts in them, that can burn your plants when adding extra nutrients. They can make it really difficult to know what your plants are getting and what they're not.
Print a copy of the plant abuse chart and have it in the grow room to help identify what your plants are trying to tell you.
1/4 strength or even half will help them not to receive too much. But I see you were adding 60% to 80%
Sometimes when the tops of the plants are showing a lighter green, it can mean that they have used up most of the Nitrogen that was available to them, and are ready for more. which is good! means they're hungry! But those 2 plants look to be uptaking differently, so I'm a bit puzzled.
Just have to ask, what are the temps in the room?
What is your PH?
What kind of water are you using, tap, distilled, RO?
I'd give them a good flush again, and start adding nutes slowly. Try using the chart that I posted but only give 1/4 strength.
Adding as they look to want more.
In my opinion, that GH chart you are using is weird, the levels just seem off to me. I've heard of multiple people having problems when running it too, especially N deficiencies.
Thanks for the reply!
The MG bag was used in the 1st batch of 4 plants (the one in the pic is one of them) It was not used after that as most said it was a poor choice.
I've been looking for a plant abuse chart, got a link?
Temps run 73 to 84 depending on where I measure, 84 is where the fan blows the heat off the lights.
The water is tap, dropped to 5~6 with PH Down acid. The only filter I have is a Brita type and I feed about 6 gallons at a time, so I don't even bother filtering, just set the water out for a few days before adding nutes/ph.
My nutes have been 2 on 1 off watering about every 4 days.
About the chart, I got it from a local retailer. He had a brochure that had about 10 charts, he gave me this one based on basic info I gave him.
The chart seems the same as what is printed on the 1 qt bottles that I bought.
Maybe GH has a chart online? They should have an abuse chart too.
Now that I've thought about the MG soil... The problem plant is one of the 4 that has MG soil. It was in a 1 gallon bucket at the time (coffee can) then FFOF was used for the repot.
Someone also mentioned root bind, this is a 23" plant in 2 gallons of soil.
Forgot the mention the lights: 10 T5s 23 100W CFLs, 2 300W CFLs, I have some pics in my grow journal linked below.