A "poster child" thread for the TF-100 test kit if ever there was one. I don't know anything about the colorQ other than it's not one of the two TFP-recommended tests kits. Taylor: K-2006 being the other one.
I'm considering a CO2 injection system to control my pH as I'm finding I'm adding acid quite frequently. I'm wondering if anyone can share their experience with it? I was looking at the Hayward one but I'm open to other options
The ColorQ has a known problem with calcium tests, but *if* we can believe those other tests you're woefully short on chlorine in the pool also. I'd hate to have you develop algae while struggling with that calcium problem too.
See this--> FC/CYA Chart <-- excellent resource to help you keep the FC balanced against the CYA