White Widow Autos (first-time grower)

Another positive week! I added the 15W hydroponic LED light to the tent, so it now has 165W instead of 150W. I might have to buy another 100W+ light for 3+ plants. I also may cover the hydroponic blue lights and/or move towards the smaller plants. I received a Luvcosy soil PH meter, but all plants had readings in the 5s (!). It's a no-calibrate meter so I will use it as a baseline at the least. I may try to buy PH up if plants look worse. Plant 1: Still the best one. Leaves moving more horizontal than Plant 2, but it seems to have less layers of leaves. Gave her Root Boost (Big Foot) for the first time and it seemed to help. Plant 2: One leaf has brown spots (see pic), which I believe is from water drops being burned onto the leaf. I will give her cal-mag for the first time during tomorrow's watering. Gave her Root Boost (Big Foot) for the first time and it seemed to help. Plant 3: This "special" plant rebounded after getting cal-mag 2 days ago. She's now growing leaves that look funny, so I'm still not sure if she will yield anything. One cotyledon fell off completely. I may give to a friend because 4 plants in a 2.7'x2.7' could be too much Plant 4: Graduated to the tent from the hydroponic! She's progressing very nicely. "Prayed" to the light most of the week until last night.