yellowing/whiting on leaves

Hey cloud, 1.5ml per litre of bloom is not enough feed at this age... your def is more than likely caused by under feeding, at this stage you should be using around 1.5m grow 3-4ml bloom per litre. Check out the BioBizz thread, there are some good feeding guides. https://www.autoflower.org/f89/bio-bizz-knowledge-base-21587.html
thanks mate. i am going to wait until i can ph the water/runoff before i add any more nutes because i dont want it to be a lockout and build up nutes in the soil. if i find that the ph is alright on sunday i will add more nutes. i hope i can get this all sorted :)
 
how do i figure out what my soil ph is. i just give her a water feed at ph 7.5 and the run off was ph 6.4
 
Here's goAuto's rough guide to soil PH - it's the only method i know of :)

Here's some good info on ph.....
If your runoff pH is higher than your starting pH, use this equation to determine your soil pH:*
Soil pH = Runoff pH + Difference

If your runoff pH is lower than your starting pH, us this equation:
Soil pH = Runoff pH - Difference.

For example, say your the starting pH of your solution before it goes in is 6.5 and the pH of your runoff is 7.0. The difference is +0.5, so using the above equation:
Soil pH = 7.0 + 0.5*
Soil pH = 7.5

If your starting pH is 6.5 and your runoff is 6.0, your difference is -0.5 and using the above equation:
Soil pH = 6.0 - 0.5
Soil pH = 5.5

Hope this helps
Blue ^_^
 
So using that method & your readings of water in 7.5 ph & run off at 6.4ph that would make your soil 5.3ph. But without your pen being calibrated properly those numbers could be off by a little,or a lot :peace:
 
how do i figure out what my soil ph is. i just give her a water feed at ph 7.5 and the run off was ph 6.4

i would say by the pics and my oppinion is they are hungry looks like there starving for N but at this kinda stage its your call depending when you wana harvest?
I use all bio bizz products apart from the root juice and im giving 4ml bloom and 2ml grow along side the others i use at this stage. Ive had it where my leaves looked the same and i just bumped up the grow for a couple of feeds then back down to a small amount i usualy try and stop the Grow 10 days or so before harvesting just to give her time to finesh up on her own:2cents:

Im trying a few differant doses at the moment so ill update the bio bizz thread i have when im done:peace: Si
 
i would say by the pics and my oppinion is they are hungry looks like there starving for N but at this kinda stage its your call depending when you wana harvest?
I use all bio bizz products apart from the root juice and im giving 4ml bloom and 2ml grow along side the others i use at this stage. Ive had it where my leaves looked the same and i just bumped up the grow for a couple of feeds then back down to a small amount i usualy try and stop the Grow 10 days or so before harvesting just to give her time to finesh up on her own:2cents:

Im trying a few differant doses at the moment so ill update the bio bizz thread i have when im done:peace: Si
well im not going to rush her im going to wait till shes ready for harvest so im guessing i got at least 4 weeks left. plus im planning on doing a 10-14 day flush :) . i just give her a 2l of plain water to flush any old nutes out then 2l of water with 3ml of bloom and 3ml of grow so its a bigger dose than what i been giving her. plus since i posted i been foilar feeding by mixing 500ml of water to 0.5ml bloom and 0.5ml of grow and seems to been keeping it at bay.
 
well im not going to rush her im going to wait till shes ready for harvest so im guessing i got at least 4 weeks left. plus im planning on doing a 10-14 day flush :) . i just give her a 2l of plain water to flush any old nutes out then 2l of water with 3ml of bloom and 3ml of grow so its a bigger dose than what i been giving her. plus since i posted i been foilar feeding by mixing 500ml of water to 0.5ml bloom and 0.5ml of grow and seems to been keeping it at bay.

Glad to here that if you wait it will pay off.:D Also if the only nutes you use are bio bizz then you dont have to flush as there organic so no need to Cleanse as such.I have do it both ways and even gave a feed up till 2 days before chop and the smoke is smooth either wayCool:
 
Glad to here that if you wait it will pay off.:D Also if the only nutes you use are bio bizz then you dont have to flush as there organic so no need to Cleanse as such.I have do it both ways and even gave a feed up till 2 days before chop and the smoke is smooth either wayCool:
thanks :D and just noticed the bio-bizz organics under your name if im using both biobizz grow and bloom do i really need to worry about ph as i been told that grow is natural and that phing isnt a problem.as i also read that the bloom ph is slighty lower than grow and i thought that if i added the grow then bloom that it would lower the ph to between 6-7 would that be correct?
 
thanks :D and just noticed the bio-bizz organics under your name if im using both biobizz grow and bloom do i really need to worry about ph as i been told that grow is natural and that phing isnt a problem.as i also read that the bloom ph is slighty lower than grow and i thought that if i added the grow then bloom that it would lower the ph to between 6-7 would that be correct?

Im using the nutes in with bio bizz soil so i know the combination will buffer my PH not too sure about in a bog standard garden centre soil if you know what i meen.There may be alot in the kind of soil mix you have that will throw out PH when you add in nutes to it. I wouldnt want to tell you whats best as i havent tried it that way:peace: Si
 
Im using the nutes in with bio bizz soil so i know the combination will buffer my PH not too sure about in a bog standard garden centre soil if you know what i meen.There may be alot in the kind of soil mix you have that will throw out PH when you add in nutes to it. I wouldnt want to tell you whats best as i havent tried it that way:peace: Si
kk thanks mate i guess its kind of an experiment then :)
 
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