High alkalinity during SLAM

[shelly7783]

What we don't understand is why CYA went from 50 to 40. I know the test is a bit subjective, but you might do it again.

Stand outside, sun at your back. Fill dot tube to first line. Hold the tube at your waist, and GLANCE at the tube. If the dot is obscured at that line, take that number and add 10 (round up). That is your CYA. If you can see the dot at a glance, then fill to the next line. Repeat until the dot is obscured, then round up 10.

No need to start over. Get a good CYA number, then use that to get your target FC.

Thanks for this, I'm not so confident with either test now so I'll test it again using this method.

 

[PoolStored]

You can pour the solution back and forth to do test multiple times on the same sample.