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Honestly I am surprised you have not had a chemical reaction to adding different company products together. Growing in coco it is high irrigation or Hydro in a potter. If your ph is climbing then your feed is not strong enough or you are not using proper ratios for your plants needs.

They are looking prey good! I see this is your first grow on this profile, I don't assume you have never grown before but if you have not, your going a great job. Some of the leaves are showing a slight N tox, dark green glossy leaves and tips that point downwards aka the claw. You might want to lessen up on the N a bit so it can recover from this. Good Luck!