no, lockup would be what I was referring to as toxidity...

deficiency means you don't have enough. Now, you can be deficient due to lock-up, but not necessarily always then case. Sometimes I will add a just one part to top-off to balance res; If I am sure I have a deficiency.

As I said, without being able to see the true colors of the leaves, It could go either way...There is not so much wrong in the 1st place...I just took notice, 'cause I have seen that in the past.

I got out the bible and the appearance of the leaves and the fact that starmark stated they were behind in bulk leads me to believe that it could be lack of potassium maybe iron deficient...could be due to lock.

If the tips are red then it is toxidity, if yellow deficient.*

*I could be wrong, but I believe that deficiency does not automatically mean locked! There just might not be enough of mineral...

Another note: Just because you have a ppm range of 1450; Does not mean that you have the right nutrient mix.
so, you could cause some nutrients to lock-up others, or
...as I said, there just might no be enough potassium/potash.

I just got Milwaukee EC meter and found that I have been running very strong, between 1500-1700ppm's (tds malfuntioned awhile back causing me to run off...tried/true recipe's. This works by the way.)

another note...I confirm that using AN 3-part at light/moderate light formula concentration's is high levels by nutrient standards, and I didn't kill my schtuff in the past...But, now having EC meter, I will lighten-up my nutrients to less toxic-possible levels.

hope this wasn't too much 'chitman.lw
latewood Reviewed by latewood on . 5 weeks in flower hi everyone....5 weeks in flower,just doesnt look as full as i think it should be ....here is the setup...unknown strain was told ww x nl...rockwool,ebb and flow,1450 ppm...ph 5.7....1000 hps any thoughts or advice....thanks Rating: 5