Banana Purple Punch Auto RF3

Greetings, so first of all, yes, you don't need to fertilize Living Soil with conventional fertilizers. BioBizz has no place here; yes, it's organic, but it's a bit different from Living Soil. Here, you need to provide the little creatures inside with different nutrients. What's worse is that you're using tap water for your Living Soil; you should switch to rainwater or osmosis water. Tap water has too many dissolved minerals. Then as a tip for you, look up your water supplier on Google; they should have the exact data for your tap water online. Calcium, magnesium, etc. I suspect that's where your pH is slipping; the soil buffers well, but there’s a limit to that. Proposed solution: Water with pH downer to 6.3-6.5 Try filtering tap water with an osmosis system, then measure the pH again. Try switching to organic materials for fertilization that can be processed into the soil (eggshells, etc.). Personally, I don't believe in Living Soil; it's certainly the purest and cleanest method, but also one of the most labor-intensive when it comes to soil care.

This is over fed.. Did you sort this?

Just keep going like that and make sure to fertilize with low nitrogen. Many calmag products have nitrogen. Definitely leave that out. Don't worry, it's all within the range.

Vey over fed.

What's the pH of the watering water? It looks like a beginning potassium deficiency, but otherwise, it really looks good 👍 awesome

Classic nute burn this is what to look for and then wind the nutes back a bit and get dialed in.. Saying you know it's not this or that will get your plant killed lol

Possibly too much light. But I'm guessing that it might be a lack of pk for flower. I would suggest adding cal mag and some extra pk If it doesn't help then it may be a pH issue

Those slightly burnt drooping tips on new growth are classic early nutrient burn especially common with autos in flower they’re more sensitive and hit their limit fast. Even if it’s not overwatering or heavy feeding the plant is telling you it’s right at max uptake so ease back the EC a bit keep pH dialed in and let it ride it’s a mild stress, not a problem yet 👊👍

Light stress can be ruled out as a cause. Then the leaves would show more symptoms, like curled leaf edges. You also don't need to measure pH because lockout doesn't apply here either. The symptoms are clear. Too high EC and VPD! Just water for now and lower the VPD to 1.3. Peace. 👽

Hi Yellow leaf tips during flowering, like your ladies have, are almost always a sign of stress – usually from nutrient excess, but also from pH issues, light stress, or natural aging. To rule out these factors, there are a few steps you should take. 1. Measure runoff. This should not be above 6.5 and below 5.8. In this range, the plant absorbs nutrients best. Then the EC value should not be above 2, as this is a sign that salts are remaining in the soil, leading to salt buildup and the plant being unable to absorb nutrients or having received too much. As for light stress, since you probably don’t have a professional light meter, I recommend the Photon app so you can measure the Ppfd or Dli and adjust the lamp accordingly. Either dim it or raise it if possible, or move it further away from the plants. You can search online for reference values for DLi levels. If everything checks out and it doesn’t get worse, don’t worry; it could also have natural causes. Good luck!

The yellowing leaf tips on otherwise still quite green leaves usually indicate stress, not an acute total loss. Common causes (without claiming a remote diagnosis): Nutrient stress (“Tip Burn”) Yellow or slightly burned leaf tips often occur when the nutrient concentration is a bit too high for the plant. The plant is still green but shows exactly this tip discoloration. Beginning nutrient deficiency during flowering During flowering, the needs change. Slight yellowing at tips or edges can also indicate an imbalance (e.g., potassium/magnesium). Light or heat stress If the lighting is very close or intense, the upper leaves react first with bright tips or slight deformation. pH imbalance Even with available nutrients, an incorrect pH value can hinder uptake, causing similar symptoms. Important: Overall, the plant still looks vital, the buds are developing, and there are no strong spots, necrosis, or drooping leaves visible. This suggests light stress rather than a severe disease. Good luck! 😘

This can have several causes, including light. But in your case here, I believe it's a combination of too high EC and also too high VPD. Lower the VPD to 1.3 - the burned tips won't disappear anymore. Now it's about preventing it from spreading further.

These are the first signs of over-fertilization: burnt tips and clawing. Hopefully, there’s no blockage; the leaf veins are darker than the rest. Good luck 🍀.