Check the listing for details. CrystalClear Spring & Fall Prep. Condition: New. Listed at 34.99 USD. CrystalClear® Spring & Fall Prep contains cold water natural bacteria designed to accelerate the decompostion of leaves, twigs, much and other sediment during the fall and winter months while replenishing winter bacteria loss during the spring. These easy-to-use, water soluble packets should be applied weekly to keep your pond looking its best even when water temperatures are between 35°F - 60°F. * Replentishes loss of winter bacteria during spring start-up * Accelerates decompostion of leaves, twigs & sediment all winter long * Cold water formula below 60 degrees F * Safe for all aquatic life Application Rate Do not open packets. Start applying when water temperature is below 60°F. Add once per week directly into pond or filtration system. Persistent Problem Application Rate If a problem arises between routine applications Spring & Fall Prep should be applied every 3 days until desired result is achieved. For Best Results Spring & Fall Prep can be applied directly into pond water or filtration system. Optimal Water Conditions: pH: 6.5 – 8.5, Dissolved Oxygen: 5 PPM, Temperature: Between 35°F-60°F Item #SizeTreatsCC026-66 packets6,000 gallons / 1,000 gallons for 6 monthsCC026-1212 packets12,000 gallons / 2,000 gallons for 6 monthsCC026-2424 packets24,000 gallons / 4,000 gallons for 6 monthsCC026-9696 packets96,000 gallons / 16,000 gallons for 6 months