Ben's Best Guess CYA Chart with FC and Computed HOCl
at 550 TDS, 80ºF
CYA	Min FC	Max FC	Shock FC	Min HOCl	Max HOCl	Shock HOCl
0	1	3	10	0.48	1.45	4.84
10	2	5	12	0.09	0.37	2.06
20	2	5	12	0.04	0.13	0.63
30	3	6	15	0.04	0.10	0.46
50	3	6	15	0.02	0.05	0.19
60	5	10	20	0.04	0.08	0.22
90	5	10	20	0.02	0.05	0.12
100	8	15	25	0.03	0.07	0.14
200	8	15	25	0.02	0.03	0.06
Rough Avg.				0.03	0.07	0.30
Recommend HOCl 0.05 minimum to prevent algae; 0.30 to shock green algae; 1.0 to shock yellow/mustard algae