Extended-Formula Fountain Treatment, 1 gal
The 1 gal (3.78 L) jug of Prevent for Fountains XT is the bulk buy for households or property managers running multiple fountains or one high-maintenance installation through a full season. The extended-release XT formula controls algae growth and mineral scale deposits so fountain surfaces stay clean without frequent manual scrubbing.
What It Does
Prevent XT inhibits single-celled algae before they cloud the water or coat surfaces, and prevents the hard water scale that forms on pump housings, basin walls, and spillway edges wherever water evaporates. The XT formula's extended-release chemistry stays active longer per dose than the standard SL, reducing the number of applications needed over a season without reducing effectiveness.
| Specification | Value |
|---|---|
| Size | 1 gal (3.78 L) |
| Treats | Decorative fountains and water features |
| Formula | Prevent XT (extended-release) |
| Safe For | Concrete, resin, fiberglass, stone fountain surfaces |
| Frequency | Apply weekly or as conditions require |
How to Use
Shake well before measuring. Add the recommended dose to the fountain basin with the pump running. For a full season of use, apply weekly from spring startup through fall shutdown, increasing frequency during peak summer heat when algae pressure is highest. Store sealed in a cool, dry location between applications. Not for use in ponds with fish or aquatic plants.
Ideal for property managers, landscape professionals, or homeowners maintaining multiple decorative fountains through a full Canadian season.

