I was having multiple issues this week. Plants started showing signs of CalMag deficiency because my tap water basically contains no Cal/Mag. Started adding CalMag to the water.
HubbaBubbaHaze was also showing signs of N toxicity. The strain description mentions it being sensitive to Nitrogen. The all mix soil is probably a bit too hot for this strain. If I grow HBH again, I would put it in 100% lightmix instead the mix I am using this grow. Decided to just let it go and hoping it outgrows the issues.