Whats wrong with my plant?

[nymanymz]

Hey everybody

Please excuse my bad english. One of my 5 plants has brwon spots on its leaves. Some stats:
-Flowering day 25
-using the whole biobizz line including 0.3ml/l biobizz calmag everytime I water using the manufacturers recomendations
-400w ndl 14inch away and 4x10w led‘s 8inch away
-biobizz light mix soil in 4.3 gal root pouches
-watering every 3 days/ if the first few inches are dry 0.64gal
-82.4 F temperature
-45-50% humidity

thanks for your help :)

 

[growsince79]

I see that on here all the time with biobizz. That and other organic nutes sometimes just can't keep up with the new leds. Raise the light or use synthetic nutes. gl man. I've never used it myself, maybe an experience biobizz guy will chime in.

 

[ComfortablyNumb]

pH levels?

 

[ComfortablyNumb]

BioBizz are organic nutes, but the manner you have to deliver them is not. You need to be checking pH, ppms and runoff ppms at least every other feeding.
BioBizz can still cause issues because of the feeding style. Root zone issues are common to the type of feeding, not just the brand.
How and when do you water and feed?

 

[nymanymz]

I water 0.64 gal of water with the biobizz nutes every 3 days. I will check the ph next time I water and keep you guys updated.

 

[nymanymz]

PH is around 6 which seems pretty low. biobizz states that its nutrients autocorrect the PH to 6.5. What do you think?

 

[ComfortablyNumb]

Read these:

Marijuana Watering, how media, pot size/shape and environment affect it

Discuss different watering methods for growing your own weed from seeds. Our community members give helpful tips on how pot size and material, as well as environmental factors affect growing cannabis.

www.thcfarmer.com

Watering for Soil Growers Only

Watering in Soil Watering plants gives many new growers anxiety issues. Because we want our plants to do the best they can, we over water and some even underwater. To help relieve the stress and confusion, this is sort of a step by step of what to do and look for when you grow in soil...

www.thcfarmer.com

 

[Kinetik]

PH is around 6 which seems pretty low. biobizz states that its nutrients autocorrect the PH to 6.5. What do you think?

Yes they correct down, not up. They won’t make your water more alkaline, but will make it more acidic. That is what i know. If you have ph at 7, the nutes birig it down to 6.5.
On the biobizz schedule it mentions to use with their soil and nutes 6.2-6.5 ph water. Any lower and the plant will not take the nutrient in corectly and enough, and any higher will take too quickly. Get a ph meter, not the paper kind. Cheers