So I had to scratch the first seedlings because they just weren’t changing and reacting well to anything I was doing. Started a new grow two weeks ago today and this time I used 2” x 2” rock wool cubes to start in. They were soaked in pH water @6.0. Seeds germinated great and as soon as we noticed the cotyledons we put them under a T5 light as close as we could get it without touching the dome. They were also under a dome and had a heating pad on them. Checked them every day and if the cubes were dry we would mist the cubes and the dome. The first picture I’m attaching is from day 10.
Wasn’t happy with the rate of growth in the next couple days so I moved the tray into our 5x5 grow tent. They are under the Growers Choice ROI-e680 light at 60% and around 24” below. We have the circulating fan running and negative pressure in the tent. I’ve also got a 6” circulating fan about 2 ft away blowing in the seedlings. Temperature in the tent read 81 degrees and humidity read 42 so I sat a pitcher of water inside to hopefully evaporate and bring the humidity up. Second and third pictures are when then went into the 5x5.
Here’s why I’m posting this. They started to yellow so I did some thinking and re-read/watched some things here and there and came up with a three day feeding schedule rotation. Day 1: Advanced Nutrients Connoisseur Bloom Coco A & B and sensi cal mag. Day 2: Voodoo Juice and H&G Root Excelurator. Day 3: B-52 and Sensizym. All of these at 1/4 strength. The yellowing has to be because they were deficient because we were just giving them distilled pH water around 6.0…so it could not be nutrient burn.
My partner sends me the last two photos today. So I’m baffled. Start thinking of why they are still on the down turn and the only thing I thought to change was to make sure that the large opening in the bottom of the tent is open so that they are getting enough fresh air. Other than that Idk what we’re doing wrong. And the other problem is the grow space isn’t at my house so I don’t see them everyday. I’m not sure if I’m doing something wrong or he’s not listening and doing what I ask. I’ve ran into this stunted growth problem twice now. Starting to wonder if it’s an environment issue. Is the light too strong? Is it too hot? Not enough humidity? Should I rest the seedlings and move to a 20/4 or 18/6? Something wrong with fresh air circulation set up?