on orders over $75
Tetra Pond Fountain Blocks control the growth of unsightly algae in your ornamental fountain. Simply drop a block into your fountain and watch the algae disappear!
Initial dose may require 1 block for every 30 gallons of water. For regular algae control maintenance, replace the block when it becomes fully dissolved (usually after 10 days).
Fountain Blocks are not recommended for use with live plants.