help yellow leaves

[bigtopsfinn]

13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. coca a and b and its says 10 on my stick
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17) What is your ingoing water's ph? ...your runoff ph? not tested

What stick? No ppm/ec meter?

Should test the ph once everything's mixed, or is it tinted so you can't use your strips?