Hey, does anyone know why I always get yellow leaves with biobizz? It’s always the same problem: leaf tips turn yellow and then the whole leaf. A week later, the buds
Good morning… I would carefully check the pH and EC of the runoff from the pot… that’s why I always measure what goes into my pot and what comes out after each watering. It seems like it’s feeding on itself, if it’s not that, I think it could be the pH of the water… that’s my humble contribution, good luck with your grows…
First of all, welcome to the community @Jan177777777. When I look at it, I think of CalMag deficiency. But first, I would ask what kind of substrate you have and what your fertilizer schedule looks like.
Sorry, hello first of all, I use Biobizz Biobizz Blom and Biobizz Top Max because Chat GPT said I don’t need Biobizz Grow anymore. I
I’ve been paying attention to pH for 8 months 
unfortunately, that’s not the issue
OK, as for fertilization, it should be fine. What about temperature, humidity? And at what power is the light running?
So currently it’s running at 240 watts and only with 50
Your VPD values are excellent. Do you fertilize once a week? And how often CalMag?
Callmac also gets watered once a week, actually always with fertilizer because chat gbt said so. I should do that now because they need nutrients, but I have no idea, I see it brings
@Jan177777777 Normally, fertilizing once a week is enough; too much doesn’t help either. I would slightly increase the CalMag dose; from
Yeah, but how do I get less light? That’s the lowest setting, I can only raise it higher in terms of height, but less power is not possible at all anymore
Okay, then I would raise them a bit higher and see if it improves. Also, slightly increase CalMag.
Do you have the ability to measure PPFD?
I always used BB Grow consistently before, otherwise they would have mercilessly starved. I think that was even in the schedule and could be a problem. But I also often had Calmag problems with BB, especially with my normal tap water.
I have one more question, are you growing with living soil?
I think the yellow leaves are related to that, because you are not using Bio Bizz Grow.
What Chat GPT told you there is wrong.
Don’t you have the Bio Bizz feeding schedule?
You can download it from the internet.
The schedule clearly states that you can start fertilizing with Fish Mix, among other things, at the beginning.
It accelerates the growth of all living organisms in the substrate and stimulates the production of microorganisms and beneficial bacteria.
However, from the beginning of flowering, you should switch to Bio Bizz Grow.
In addition to BB Grow, there’s also Top Max, Bloom, and the quantity increases with each additional week of flowering.
In All Mix as well as in Light Mix soil.
However, in Light Mix, the fertilizer dosage is simply indicated as twice as high.
It’s not entirely correct to be able to do without the other products.
BB Root Juice from the beginning promotes healthy and strong root formation until the start of flowering. Strong roots are essential during flowering.
BB Alg A Mic de-stresses the plant, helps with slight over-fertilization, deficiencies, and so on.
Bio Heaven, an energy booster.
Improves moisture retention. Stimulates enzymatic activity and rapid nutrient uptake.
I’ve snapped the feeding schedule for All Mix soil for you.
The arrow next to Grow / Fish means “this or that.” Not both at the same time.
As I said, you can start building up the soil life with FM and then use Grow from the start of flowering.
You can use Grow from the beginning, but almost until the end. The last 1 to 2 weeks then only water.
And during the flowering period, the quantities increase.
Your plant is missing BB Grow and is therefore underfed, which is what the yellow leaves are trying to tell you.
Regards
What does soil life mean, and well, I omitted the grow [stage/nutrients] and the leaves are getting worse and worse, yellower, etc. Even despite CalMag,
Yeah, I’ve noticed it’s even worse without growing, I don’t know, it’s all not so great. Even with a scheme, they start with yellow leaves, just not as fast. I think it’s still too little, right?
Soil life consists of fungi and bacteria. According to @Pflanzenpaul’s fertilization plan, cultivation should not be stopped. I don’t know the fertilizer, but if you stick to the guidelines, it should be fine; they know best what’s in it and how much of what is needed. Follow the plan and observe the new growth.
Yeah, I’ll try that. Btw, I’ll check again to see if it
Nonsense, sorry, but Biobizz is given with every watering process.
I water every 2 days 3l, 100% according to the schedule (autoflower).
I also had the problem that they turned so light.
I claim it’s due to the pH value of the water. Or what’s more likely is too little CalMag. I increased the CalMag and the plant has become nice and green again. I am now at 1ml/1l water for CalMag.