Check the listing for details. UltraClear� Oxy (Oxygen Cleaner) by ABI Inc. - 8lb Container. Condition: New. Listed at 84.99 USD. UltraClear® Oxy is an effective oxygen-based solution for cleaning rocks, waterfalls, fountains, statues, plant pots and ponds in general. Contains sodium percarbonate and sodium carbonate for powerful oxygen based cleaning of rocks and crevices in waterfalls as well as stains on rocks, fountains, statues and other stone surfaces. Application InstructionsShut off waterfall. Manually remove any obvious debris or material for rocks and waterfall. Sprinkle Oxy directly over areas that need to be cleaned. Do not apply directly to live plants. Treat pond with UltraClear® Clarifier 24 hours after using Oxy cleaner to ensure proper biological balance in pond.TreatmentDosageSpot CleaningApply a light layer to problem areasLight DoseUse 1oz per 1000 gallons weekly or as neededHeavy DoseUse 3oz per 1000 gallons weekly or as neededCautionHarmful if swallowed or inhaled. Avoid skin and eye contact. In case of skin contact, remove affected clothing and wash skin thoroughly with water. In case of ingestion, eye contact, or inhalation, seek medical attention.