Ok everyone help me out here....
SLAMMED my pool and got rid of algae, everything was perfect over the last 2-3 weeks. Just went out of town for a week and before I left, my pool had a CYA 45 and FC 4.5. I dumped maybe 24oz of LC in before leaving that was left over from the SLAM - figured it would give me a little security while I was gone.
Returned from vacation and saw a little green. Wife swears it was dirt and I brushed it all off but some did have a green tint. Tested right away and got a CYA 45 and FC 5.5.
Question: I'm really tracking CYA/FC since the SlAM. Advice was to have FC 7.5% of CYA, 10% to be safe. My FC 4.5 is at 10% and while I was gone it jumped to 12% after the LC.
Which gives? Thanks!