Yellowing leaves again!! Please help!

NewGuy99 · Nov 10, 2025

Having some issues with my new grow, this seems to be worse than last time I used regular soil.

I have several different strains, all auto flower. Currently on week 5 and would appreciate some help. The leafs are all turning yellow and from the bottom up, going crusty and brown.

Light is good distance on 75% lighting . I'm using woven fabric pots and feeding every time they feel empty. (Approx every 3/4 days) with feed of PH 6.

Planted in BioBizz light mix soil and using BioBizz nutrients - My last feed was: Bio Grow 2ML/L / Fish Mix 1ML/L and CalMag 0.5ML/L
My next feed tomorrow will replace Fish mix for Bio-Bloom 1ML/L

I have researched and not sure what the plant is lacking. Whether its lights / water or neutrients. Any ideas??

Greenadian · Nov 10, 2025

Hey there @NewGuy99 plants still look pretty good. Whats the humidity in that room?
Looks like 23°c which is good........ I would say your plant is lacking its Bloom nutrients and could be increased!

NewGuy99 · Nov 10, 2025

Greenadian said:
Hey there @NewGuy99 plants still look pretty good. Whats the humidity in that room?
Looks like 23°c which is good........ I would say your plant is lacking its Bloom nutrients and could be increased!

Thanks @Greenadian. Humidity is around 75 between 73-78. I will use bloom nutrients on next feed tomorrow and see if that makes a difference. Should I cut away the bad leafs or just leave them to. Fall off naturally?

Greenadian · Nov 10, 2025

Those leaves are pretty far gone.....i would remove them.

JIMKSI64 · Nov 10, 2025

The issue is broad based and you do need to start your flower nutes but please check with your feed chart. Almost every 2 part grow/bloom set has substantial overlap where both are used.
Also I am a fan of top dressing Earth Worm Castings during the grow. It supports nitrogen and helps soil compaction and reduces hard to water pots that sometimes drain slow. It is also very hard to get sideways with EWC.

Greenadian · Nov 10, 2025

A quick search on Mr Google

NewGuy99 · Nov 10, 2025

Greenadian said:
A quick search on Mr Google

Thank you @Greenadian. I am using a different chart and schedule that says to replace fish mix with bio-bloom. This has them both ongoing...Do you think I should continue using both or replace?

NewGuy99 · Nov 10, 2025

JIMKSI64 said:
The issue is broad based and you do need to start your flower nutes but please check with your feed chart. Almost every 2 part grow/bloom set has substantial overlap where both are used.
Also I am a fan of top dressing Earth Worm Castings during the grow. It supports nitrogen and helps soil compaction and reduces hard to water pots that sometimes drain slow. It is also very hard to get sideways with EWC.

Thank you, I will remember the earth worm castings for my next grow.

Greenadian · Nov 10, 2025

Bio-Grow 3ml
Fish Mix 3ml
Bio-Bloom 2ml

All 3 products are to be used together at each feeding to ensure a healthy plant.

It recommends balancing your PH and using an enzyme product

NewGuy99 · Nov 10, 2025

Greenadian said:
Bio-Grow 3ml
Fish Mix 3ml
Bio-Bloom 2ml

All 3 products are to be used together at each feeding to ensure a healthy plant.

It recommends balancing your PH and using an enzyme product

Just ordered the BioBizz Acti-vera for enzyme product, as had no idea I should be using one. From quick research seems beneficial for my issues - Lesson learnt. Thanks for your input - I will keep you updated about my progress!

Yellowing leaves again!! Please help!

Yellowing leaves again!! Please help!

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