I feel like I’m constantly running out of something, but I’m going to do my best to stay on top of it. Next year, I’m buying the biggest bottles I can find*also worth noting that we *thought* the CYA was 50 but it turns out to be 20 or less. Not knowing the actual level opened the door for quick FC burn off from the sun leaving little/no FC. We've been chasing our tails ever since.
Know your levels/#s future reading folks, especially once there is any suspected problem. You may be out of a test because it's always something, but get a replacement PRONTO as it as it may change the entire plan of attack.
3kaap I suspect you will never go without CYA mix again. So in the end this was a good thing without too much struggle to teach the lesson.