Wedding Cake, Barney's Farm, Feminized

Day 1: Week 3 started with typical errors. I put the recommended amounts of micro/grow/bloom on top of the "old" reservoir water. Surely the EC jumped too high and I had to dilute it down immediatly. Ec is now 1.2, which is probably 0.2 too much considering the plant's current stage. Let's see if the 1.2 is too hot. If the leaves start clawing, I will bring the ec down a notch. The water in the reservoir is too hot temperature-wise, 25 °C. I do have Vitalink Chill stored, but maybe not a good idea to add it right now because of the highish EC. I will lower the night temperature down to 16-18°C and hope it cools down the reservoir. pH is set now to 5.8, altough lately it has been sneakingly rising. Day 2. I managed to lower the reservoir water temperature to 17.8 °C (64 °F), EC went down to 1.1 and pH is 5.7. Day 4. It seems that we have an issue with calcium deficiency and I think it has something to do with low pH. No calmag added, but I did bring the pH up to 6.3 by adding 3 ml of Silicon Max. Also added Root Stimulator and Photosynthesis Plus. Temperature is 24°C (75 F) in the tent. 23,3 °C in the reservoir, which is a little high. Day 5. Plant topped, EC 1.2pH 6.1.