Why Yellowing tips, 1x stunted plant

Nitrogen, manganese, potassium and Iron deficiency.. You are feeding them only calmag and bloom.. both are acidic and have lowered the PH so the plant cant absorb other nutrients from the soil. You need to feed a base nutrient that contains nitrogen amd trace minerals.. flush them with water and feed less bloom... stop the calmag and check PH

Looks like it’s lacking something imo , your plants look a lot like most of the ones I’ve grown. What I would make sure todo is get them looking happy and healthier before flower unless you need to flip due to not having time to finish flower. I’d give them a slight defoliation on the inside mainly to get light and air flow, flush for one watering , then use grow nutes again before switching to flower. What I’m doing on my plant rn cuz of wishing I did this in the past.

Hi, checked your diary, my guess is your ph went lower than 6.3. This happens when we increase nutes hence why we try and aim for a 6.5ph because there is always a slight change went it reacts to the soil. Check run off ph with ro water if you have or bottled water, you are feeding so its not a deficiency and you did not give too many nutes either imo a femised strains of that size can handle it no problem. good luck

I'm thinking it looks more like a potassium deficiency and maybe magnesium deficiency. Have a look at pictures on the Internet of them 2 deficiency and compare them to your plant.

Ya looks like nutrient burn .. maybe a good flush followed by a few days to recover then flip after next feeding.. if the flush fixes the problem then you know that's what it is .. if that the case try feeding 60% next feed after flush.. Goodluck and happy growing ✌️