PH 5.7-4.7 in 12 hours. DWC

Some pics..
Only a few leaves showing deficiencies.. hard to see I know with lights.
Roots are just the same. No change.. so thinking of ruling it out of being a main issue..
Will double check res for ph before lights out
 

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do you think maybe too small of a res size is the problem. too many roots to water volume plus amount or air being pumped in

i have noticed with my grow. the more my roots fill my res the less stable my ph is and i see bigger changes to my ph
 
Octastich said:
do you think maybe too small of a res size is the problem. too many roots to water volume plus amount or air being pumped in

i have noticed with my grow. the more my roots fill my res the less stable my ph is and i see bigger changes to my ph
Click to expand...

I really couldn't answer that tbh. It is a 60 litre barrel though. And ph generally was quite stable in it. Increasing slightly over several days.
PH today is 6.2
PPM is 511
Water level has dropped approx 8 litres.
So I'm assuming she's back to eating.
A couple drops of acid to bring ph down is all im doing and will check again tomorrow
 
If it's dropped again like that tomorrow that's gotta be a cure..
If only I did that sooner.. instead of just reducing EC all the time.
Live and learn
 
coreywebster said:
How much cal/mag are you adding to your RO water?

You should take your RO water and buffer it to 200ppm with calmag and use that as a starting point adding you nutrients after and then PH to desired level.

You should find your water keeps a more stable PH that way.
Click to expand...
So y add the cal/mag before everything else wont that mess up the sillica?
 
Yeah, what your water level did in that time in relation to your readings is the key to understanding what you are seeing.
 
Water levels dropped.. but not as quick as usual. Ph remains stable.. ppm back to 580....
It will need a top up. But can't get RO till tomoz.
When I'll test again...
 
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