Moby dick Auto

I did the water change 17-12-22 with the plan of switching to PK boost 24-12-22 but decided mid-week she was probably in peek flower already so switched it up. The next few days and previously if I think back every morning the PH was low at around 5.5 so needed adjusting up. Evidence of calcium deficiency has been showing the last few weeks on and off, so I increased amount of CalMag in the solution. As improvement was slow I did some research and it looks like I didn’t have a strong enough solution overall and that was causing the PH crash and associated deficiencies. I did another change with PK boost but 120ml of A/B rather than the reduced 90ML I was using to avoid nutrient burn she experienced a bit of early on. I’ll keep a close eye on her the next few days hopefully I haven’t done too much damage EC is high at 2.9. She is close to harvest now.