Green Clean Pro Granular Algaecide, 50 lbs

This is a sodium carbonate peroxyhydrate-based granular algaecide/fungicide that oxidizes algae on contact, producing oxygen and harmless byproducts, making it safer than copper sulfate option.

Action begins within 60 seconds—you’ll see bubbling and bleaching, with algae and cyanobacteria dying off in 24–48 hours.

For heavy blooms: 20–90 lb per acre-foot. For light growth: 2–9 lb per acre-foot. Spot treatments use 20–50 lb per acre-foot.

Yes—it’s safe for koi, trout, livestock, and crop irrigation and no usage restrictions post-treatment.

Broadcast evenly from shore or boat using a spreader or by hand (with gloves). Break up large mats first. Post-application, skim the surface dead algae to prevent nutrient recycling

No—it fully degrades into water and oxygen within about an hour and won’t accumulate in sediment.

Yes—operating aeration helps disperse the granules into deeper water, especially in larger water bodies.

Allow at least 48 hours between treatments. For maintenance, apply monthly during warm months or before freeze to prevent Winter algae buildup.

Effective on planktonic blooms, filamentous mats, submerged slime algae, and cyanobacteria. Suitable for ponds, lakes, irrigation systems, and fountains.

Wear gloves and avoid inhalation or direct skin contact. The EPA label does not require extensive PPE beyond basic precautions.