Looks like big time lockout causing at least a N deficiency to me. You did not say if you did a weekly flush during your grow or not,this is crucial. I flush by hand each bucket with about 2 gallons of clearex mixture pouring over the top. You can use the system to do the flush but if you think about it after the first cycle you are just send the same shit back up to the plants. After pouring the clearex solution I follow with a good dousing of straight water. If you are going to run your nutes that hot you better flush every week to 10 days religiously. I have to disagree with the calmag statement,I run calmag as soon as I start feeding nutes all the way to finish. I also ALWAYS throw in a half strength mixture of calmag into my clearex solution,this was recommended to me by a large commercial grower that I highly respect. He told me stripping the roots entirely with a flushing solution is not good for the plants except for the final pre-harvest flush. Just my 2 cents but I have had ridiculous success following this regimen.
thanks for your response
I did flush during grow . Not weekly but within 10 days period.
Up until 4 weeks ago when it was like 2 weeks between.
I guess you right about lockout. I went too high on nutes from the start due at first to defect ec tester.
But they recovered nicely at the time.
I've done 2 days flushing( with calmag shot - thx for the tip) and they are on a 1.4 EC / Ph 5.8 now for 2 days.
Everything is stable though if they will not show some improvement this week I gonna chop them.
Bit shame really but I consider this to be a test run of self made system it's ok.
Looked how things are working together / learned few things.
even bigmike from advanced admitted S. Powder was better than his. At that time.