Leaf-tips going droopy mode

Yup, can see the bad watering habits in the picture. Definitely fix that, then re-assess. If they are still pointing down after a couple proper irrigation cycles, then you can consier if it's a tad overfed with N and causing some clawing. the leafs look like they may be touching the sides of the pot too, which could cause this. Flip the tips on top of pot rim once big enough. So, it is simple to irrigate i'll give both soil and soilless procedures because i'm not 100% cure what biobizz mix is, lol. Looks like coco coir to me, and if it had a light charge to start, that's irrelevant by this point in time and should be treated as a soilless medium. Soilless -- Water entire pot. Get 10% runoff, religously. This waste water is no good for potted plants but excellent for an outdoor garden. Coco coir dries a bit faster, so once that top layers starts to change colors or even slightly before, it's time to fertigate again. Always irrigate with fertilized water around 1.3-1.5 EC, excluding tap ppm. If you stick to ths you won't have a buildup in the substrate. A primary benefit of this method. You may need to tweak the formula, but no buildup will occur from that formula with religious 10% or more runoff. (simplified.. the actual EC of the substrate will rest a bit higher than your formula + tap ppm, but it'll be consistent over time). Tweak formula until plant is exceptionally healthy and free of symptoms all the way to harvest. May need 10-15% less N in flower but otherwise needs similar levels of other nutes throughout. If it isn't consistent across numerous strains of plants, keep tweaking. just in case: Soil - water entier pot. Minimal runoff ensures this is accomplished and doesn't waste amendments already in the soil. Wait for top 1" to dry and repeat. When you add fertilizer depends on the depletion of nutes that came in the soil. How frequently you add it depends on how concentrated of a dose you use. Every other irrigation? Every third? i'd stick to what works with either of those 2 options. Some fertilize once/week. just be consistent and you can slowly adjust until you find a happy zone.