Why do you have it & what causes it:
High consumption rates of Soft Swim® "C" (also Baqua Shock®, Splashes® Shock, Revacil® Shock) are caused by a variety of factors.  High consumption refers to the fact that your pool is or seems to be "using" a lot of hydrogen peroxide shock. Here's a list of the most common causes:

Heavy metals (iron, copper, manganese) present in the pool water (even trace amounts).
Early algae growth.
Poor circulation due to inadequate pump (horse power doesn't mean too much, sometimes smaller is better) or positioning of the return jets.
Poor circulation due to lack of pool usage.
Overwhelming introduction of dirt & debris into the pool (overhanging trees, construction area nearby, etc.).
Addition of fresh water through rainfall or garden hose.  Especially large amounts over a short period of time.
Heavy bather usage without proper additions of sanitizers/oxidizers.
Overwhelming introduction of "unfilterable" waste from swimmers (cosmetics, lotions, body fluids).
Use of Heater (water too warm) causing faster sanitizer usage.
Use of Solar Heating System (system is not being adequately chemically treated to kill build-up of biofilms, algae, etc.).
....Are you getting the Hint?  Here's more...
Insufficient sunlight on the pool. UV rays are a GREAT natural oxidizer. (Indoor pools are a whole other issue that we will not address here.)
Lawn & chemical sprays "drifting" into the pool (from a neighbor).
Filter needing a chemical cleaning (remember that using a straight acid will only set the greases & oils into the filter media).
Pool not being vacuumed or brushed on a regular basis.
Broken or otherwise damaged filter lateral (sand), septum (DE) or element (cartridge).
Unclean solar blanket.  A biofilm is building on the side in contact with the water.
Make-up water added to pool from an unclean garden hose.  Let the hose run for 2 to 3 minutes before putting it into the pool.
Dirty pool toys & floats putting a strain on the sanitizer.
Make up water that isn't treated the way it used to be.  Many municipalities are treating the drinking water with chloramines rather than chlorine;  they do an adequate job with bacteria but don't have the oxidizing strength to combat other non-lethal pathogens.  The switch was done to placate people's perceived "fear" of chlorine being in the water.
Lack of pool-owner care as in regular testing, vacuuming & maintenance.
When was the pool last shocked?  Hmm?

As you can see there are many reasons for high rates of consumption of non-chlorine hydrogen peroxide shock.  It's rarely caused by one issue.  Normally it's a combination of factors & you will need to go through this list (not exhaustive, if we're pushed we could probably think of a few more) item by item to see if it applies to your particular condition.

Prevention:
Prevention of high consumption is preferred over treatment. Follow these steps to help prevent cloudy water:
1. Physically brush & clean ALL Pool surfaces weekly, including ladder steps (especially underneath each step) & rails
2. Expose ALL pool surfaces to as much sunlight as possible (sunlight & UV are natural oxidizers)
3. Regularly add oxidizing chemicals (Soft Swim Assist) into the skimmer to purge & clean the filtration lines of any bio-film*
4. When adding make-up water from the garden hose, allow the water to run for 2 to 3 minutes before putting the hose into the pool to help flush out stuff that is in the hose.
5. Regularly test your pool water wither at home or at a local pool professional's store (just make sure that they're not using the same type of testing equipment you are) .
6. Regularly clean pool toys & floats (use Stow Away)
7. Regularly clean pool solar blanket (use Stow Away)
8. Chemically clean pool filter every 4 to 6 weeks (use SoftSwim® Filter Cleaner)
10. Use Optimizer Plus® as a preventative measure to prevent algae growth.
11. Run the filter a minimum of 12 hours daily to prevent "dead spots" in the pool
12. Remember to clean & rinse the brushes, hoses & vacuums that you use to clean the pool.
13. Leave as much of your pool equipment exposed to the sun.
14. Keep the water balanced at all times. Recheck after heavy usage or rain or large "top-offs" of new water. Water balance refers to Free Available Sanitizer level, pH, Total Alkalinity, Calcium Hardness.
15.  Pre-treat for metals with Stain Control (especially if you have well water).
16.  Shower before using the pool to help remove body oils, cosmetics, etc.
17.  Use a SkimMor to trap pollen & other debris that would otherwise pass through the skimmer & filter system.
18.  Cut back overhanging tree branches that put in leaves, pollen, debris.
19.  Use the pool!

Treatment:
Treatment MUST BE QUICK AND TOTAL! DON'T SKIMP!
1. Clean all pool & affected surfaces as prescribed above.
2. Physically clean & remove all visible algae
3. Add an initial dosage of algicide to the pool*
4. "Shock" the pool with a triple or quadruple dose*
5. Run filter 24 hours daily until water is clear & halogen or peroxide levels are maintained at a "higher" level*
6. Chemically clean the filter
7. Bring in a fresh water sample about 4 days later for a retest & evaluation
8. Maintain Optimizer Plus® levels
9. Maintain good water balance of pH, Total Alkalinity & Calcium Hardness.
10. Use the pool!

*Follow the instructions given by your pool care specialist EXPLICITLY. Failure to do so could result in harm to you and/or your pool & its components.

If you still need help, here's how to reach us:

Telephone (during store hours): Stratford  203-377-0100
                                             
FAX: (24 hrs) 203-375-7787
Email: techhelp@parpool-spa.com