For containerized ponds only
Limited to use for backyard or homeowner ponds and water fountains
EPA approved
Not for use with live plants
Safe for fish but not for use in non-ornamental ponds
Instructions:
Use one block for water volumes between 100 and 250 gallons. Initial dose may require one block for each 100 gallons. For regular maintenance, replace block when fully dissolved (usually after 30 days).