Hello! I could use a little advice here, I think I goofed.
History: I built a 99% sealed grow room in my basement. Inside the grow room I have a 4x8x8 grow tent. I germinated 10 seeds of the Big Bud strain in Rapid Rooters inside the tent, at around 78 degrees with a nice 70% humidity. As soon as they sprouted and had their first little leaves, I put them under the 12000 watt KingLED grow light at about 4 inches away. After they stopped growing as fast for about 3 days, I transplanted 8 of them into Fox Farm Ocean Forest potting soil in opaque solo cups (2 of them didn’t make it RIP), During that time I had 1 leaf on one plant turn brownish around the edge and tip, and 1 leaf on another plant have yellow spots. Trying to diagnose the problem, whether they were overwatered or what have you, It turned out that the water I was using was filtered through a Brita pitcher, and when I finally had the tools I needed to test the water, the PH was only at around 5. I added PH up to the water to get it to 6.5. Since then I tested the tap water, and to my surprise it’s between 7 and 8 PH. So now I use straight tap. They grew a bit more and less than a week later I had to transplant again to avoid them becoming root bound, so I transplanted them into 7 gallon fabric pots. I had enough of the Fox Farm soil to fill only half the pot, so I added some Vigoro all purpose potting soil…(.07, .04, .03) to fill them up, and watered them. Today is their 3rd week birthday! I may have goofed today though, I added a full envelope of Bergman’s Plant Boost to a gallon of water and used it on them this morning. I think I might have overfed them. They look good now, but am I going to be dissappointed?