ESTIMATE DAILY FC LOSS

CYA LEVEL:

ppm
% Daily FC Loss



STARTING FC LEVEL:

ppm

AMOUNT OF FC ADDED EACH DAY:

ppm

Show Daily FC Additions
Significant Figures:

CALCULATED RESULTS

Day 1: FC dropped to ppm,
raised back to ppm
FC added on day 1: ppm

Day 8: FC dropped to ppm,
raised back to ppm
FC added on day 8: ppm

Day 2: FC dropped to ppm,
raised back to ppm
FC added on day 2: ppm

Day 9: FC dropped to ppm,
raised back to ppm
FC added on day 9: ppm

Day 3: FC dropped to ppm,
raised back to ppm
FC added on day 3: ppm

Day 10: FC dropped to ppm,
raised back to ppm
FC added on day 10: ppm

Day 4: FC dropped to ppm,
raised back to ppm
FC added on day 4: ppm

Day 11: FC dropped to ppm,
raised back to ppm
FC added on day 11: ppm

Day 5: FC dropped to ppm,
raised back to ppm
FC added on day 5: ppm

Day 12: FC dropped to ppm,
raised back to ppm
FC added on day 12: ppm

Day 6: FC dropped to ppm,
raised back to ppm
FC added on day 6: ppm

Day 13: FC dropped to ppm,
raised back to ppm
FC added on day 13: ppm

Day 7: FC dropped to ppm,
raised back to ppm
FC added on day 7: ppm

Day 14: FC dropped to ppm,
raised back to ppm
FC added on day 14: ppm

This calculator helps to estimate your FC loss over time such as when going on vacation. The daily drop in FC can vary depending on sunlight, organics, swimmers, water
temperature, time of year and other factors.
1. Select your CYA level. A percentage of daily FC loss and recommended FC levels will be shown for that CYA level. Indoor pools will loose much less FC.
2. After selecting your CYA level, the daily FC loss percentage can be changed to the amount of FC that is actually lost per day or an average amount.
3. For the most accuracy, test your pool to see how much FC it looses in a day. Use the "CALCULATE THE % OF FC LOST IN A DAY" calculator above.
4. Enter your starting FC level. Many people will raise the FC to shock level when starting. Do not go over mustard algae shock level.
5. Enter the amount of FC you plan to have added every day.
6. If you plan on adding FC every other day or something other than every day, click "show daily FC additions" and input the days separately.
7. Click "calculate" to estimate your daily FC levels. Day 1 would be the first day of leaving the pool unattended and so forth.
** That CYA level is not recommended for that type of pool.
COLOR KEY:
FC too high,
FC good for nonswg and swg pools,
FC good for swg pools,
FC too low
