- Target pest
- Blue-green algae (Cyanobacteria)
- Location
- Both
Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.
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Blue-Stone Crystals is a non-classified herbicide and fungicide containing 99.0% copper sulfate pentahydrate. It is designed to control various aquatic organisms, including blue-green algae (cyanobacteria), green algae, diatoms, and flagellates, as well as certain aquatic plants like water hyacinth and water willow. The product is used in various aquatic environments such as lakes, ponds, reservoirs, and irrigation systems. It can be applied via spray, drip irrigation, or through stormwater drain systems under specific regulatory conditions. When using this product, it is critical to consider water hardness and dissolved organic carbon (DOC) levels, as these can affect efficacy. Users must be cautious of potential toxicity to fish and other aquatic life. The label provides specific instructions for different target pests and application methods, including calculations for water volume and area. Handling requires specific personal protective equipment (PPE) to prevent skin and eye irritation.
| For pests | Location | Finished strength | Label notes |
|---|---|---|---|
| Algae/Aquatic Plants | Both | Varies based on target pest and water volume | Calculations must account for water volume in acre-feet and surface area in acres. |