Is this a CalMag deficiency?

i also use biobizz all-mix along side biobizz nutrient with a custom schedule i've adjusted over time, you can find my custom schedule first week of my latest diaries, basically 1/2 2/3 lowered dose with none 1 or 2 weeks delay depending the bottles. honestly i personnally don't really bother about pH, i measure my tap water pH with colorimetric drop once every 6 month, it's pH 8 , pretty stable and i drop it to 6.5 7 before mixing nutrients, most soil will self buffer pH to a certain extent anyway. and a said before as it's most prolly just a capricious phenotype more sensitive to feeding than some others i just don't bother with such small sign if they don't spread wich is often the case. this is the advantage of growing large amount of plant from the same strain you can observe the various phenotype behaviour and strains homogeneity. my advice is you finish this grow with the pellet and start with biobizz nutrient next grow, don't worry your plants will make it to the end even if few deficiencies or burn with significantly impacting your harvest quality and overall yield. Happy growing

hey there legrowsky, you're doing well with plain water . two things are happening , first thing is actually overwatering . this you can tell from the puffy space between the veins of the leafs and the wrinkling . Sometimes the soil gets compacted quite tight and water gets trapped towards the center. dont worry about it though, just wait a full day longer than you are already doing, usually that will be enough to release the trapped water, then just go as you were bearing in mind the water wont be trapped anymore. Once you wait, you can "calibrate yourself" with the lifting pot method , lift the pot when it's fully dry then only water when it's that weight . Using the lifting pot method , you wont ever over water again. The second thing happening is that because of the moisture that's trapped the pellets are just a bit strong right now so it's a bit of Nitrogen excess. You can tell from the "too green" too dark aspect of the leafs. Nothing you can really do about it except be careful about overwatering. Just keep going as you were with plain water it will work itself out. hope this helps ! 🚀

@Hashy @AsNoriu @HerbalEdu thanks for your input, highly appreciated. I do not feed the plants at all, all I've used so far is the AllMix Soil (BioBizz) and Zamnesias Monster Bud Mix (Pellets) which were pre-applied to the soil. How can I stop feeding them if it is already in there? The fertilizer is a 150g pack which is supposed to feed 1-2 autos for their entire grow. However, as I've heard for autos, less is more a lot of the time, I've split up these 150g into 50g for each plants so I hopefully don't overfeed. I've ordered the BioBizz Trypack (Bio-Grow, Top-Max and Bio-Bloom), CalMag from BioBizz and a also PH down from BioBizz together with a PH-meter. So if I've understood correctly, I have to avoid everything with nitrogen. So should I apply Bio-Bloom and CalMag? If Yes, which PH-value do you recommend for the watering with my soil? I had no chance to measure the current PH-value yet. Thanks again!

You probably going need to start adding nutes as the allmixx will have run out of nutrition around week 5.

Huge nitrogen toxicity. Stop vegetative nutrition for 1-2 weeks, you can go with bloom and additives, but no Nitrogen based/dominant feets any more. You will midget your girl yourself with excess , less is more in growing.

yellow leaf tip happen pretty often and don't necessarly spread afterward, i personally don't bother about it i grow 8 plants of the same strain at time such sign could show on 1 or 2 phenotypes and not the others while they all get the same feeding and environnemental conditions, some phenotypes are just more capricous and sensitive to feeding than some others, if i stay as is, wich is often the case as said i just don't bother. (In case it spread in the next few day could be first sign of magnesium deficiency) Happy growing