Cuttings turning some yellow and purple after day 5

What's with the 350 ppm clonex?

When I used a water cloner I Just used straight tap water. My water averages 7.5 pH. I never had any issues. That was with a 24 site cloner that I built myself. Out of 24 cuttings I'd occasionally get 1 or 2 that didn't root. I did it that way for years. Always over 90% success.
 
What's with the 350 ppm clonex?

When I used a water cloner I Just used straight tap water. My water averages 7.5 pH. I never had any issues. That was with a 24 site cloner that I built myself. Out of 24 cuttings I'd occasionally get 1 or 2 that didn't root. I did it that way for years. Always over 90% success.

When I take cuttings my tap water is 160 and I add clonex to get it to yeah about 350.. I was using straight tap water with no clonex and the roots would be thin and weak looking. The roots with clonex are thicker on the cuttings... I usually ph down to the 6 range after the 3rd day of taking cuttings.
 
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