DIY Quantum Board ScrOG

The plants were LST'ed at day 22. I used wire bent into a 'U' shape to bend each growing tip horizontally. Each plant had 2 grow tips at the 2nd node, 2 at the 3rd node and 2 at the 4th node where the plants were topped 4 days earlier. I topped plant 5 too early and it resulting in it being fimmed. At least I'll be able to compare the pros and cons of fimming v topping first hand. These plants are super short and super bushy! They are looking a lot better since I fixed their nutrients last week. They are doing especially well considering we have had nearly a week of daytime temperatures around 35 C (95F) and no air con in the grow room. I was away for 3 days and came back on day 27 to find plant 2 showing signs of a what I think is a worsening calcium deficiency. It's had signs of a deficiency since the start of week 3 which I thought were caused by a once-of mistake with the nutrient dosage. I don't know why it's only effecting one of the plants and not the others. I've flushed the plants with 20L each of pH 6.0 tap water, moved the lights up by 2" to try give the plant a chance to recover and upped the nutrients to 100% strength (from 50%, as recommended on the bottle). All plants had their 6 main growth tips topped on day 27. Not sure if I should have topped plant 2 as it's a bit sick, we'll soon find out!