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Aquashade Aquatic Herbicide
06/13/26
Aquashade Aquatic Herbicide is developed by Arch chemicals and is a pond dye and aquatic weed treatment. The product consists of a blend of blue and yellow dyes that work together specifically to screen or shade portions of the sunlight spectrum (red-orange and blue-violet) that are known to promote underwater weed and algae growth.
Simply pour the correct amount of Aquashade directly into the water at several different locations and let the product do the rest. In the end your pond or water body will look clean, clear and beautiful.

Tools Needed
All you need to use Aquashade is a pair of safety gloves when applying to your water body. Aquashade can be poured directly from the container, but it is recommended to use a pouring device, such as a bucket or even a sprayer.
How to Use
- Step 1: Measure the size and depth of body of water to determine how much Aquashade you need. To determine acre-feet volume, measure the lendth, width, and depth of the waterbody, and then divide by 43,560 (length x width x depth / 43,560 = acre-feet). Aquashade can be applied at various rates: 20 fl. oz., 32 fl. oz., 60 fl. oz., or 80 fl. oz. per acre-foot of water body volume.
- Step 2: Pour the Aquashade over the edge directly into the body of water and the water's natural movement will disperse the dye in several hours.
- Step 3: Additional applications will be needed at 1 to 4 week intervals as dyes are broken down by sunlight.
Where to Use
Aquashade can be used in lakes, ponds, water fountains, and lagoons.
When to Use
For best results, use Aquashade before or at the beginning of spring months to prevent algae and some unwanted underwater plant life from growing.
Safety Information
Aquashade is completely non-toxic and safe for humans and animals. When applied at the recommended rate, it will not stain or birds or fish. Once the dye is completely dispersed, irrigating, fishing, water sports, and other activities can continue.
Special Considerations
Aquashade may stain clothes and skin. Wear suitable protective clothing when applying Aquashade.
| Restricted Use | No |
|---|---|
| Shipping Restrictions | MA |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "While Aquashade does kill some aquatic weeds, it shouldn't be looked at as a lone herbicide for aquatic weed control. Use it in conjunction with herbicides or algaecides for control of surface algae mats or shallow-water plants." |
| Time to Kill | N/A |
| Chemical Type | Herbicide |
| Formulation | Dye |
| Application Methods | Broadcast Spray |
| Product Drawbacks | This will not produce total aquatic weed control. For most effective results, it is recommended to be used alongside aquatic herbicide. |
| Active Ingredient | Acid Blue 9 Dye 12.60% Acid Yellow 23 Dye 1.04% |
| Application Equipment | Gloves |
| Mix Rate | Aquashade can be applied at various rates: 20 fl. oz., 32 fl. oz., 60 fl. oz., or 80 fl. oz. per acre-foot of water body volume. |
| Use Sites | Outdoors |
| Yield | 1 gallon of Aquashade can treat up to 6.4 acre-feet of water volume. |
| EPA Registration No. | 33068-1 |
| Shelf Life | This will last for years when stored in a cool, dry space. |
| Comparable Products | Vision Pond, Blue Lagoon Dye, SePro Blue Colorant |
| Children or pets? | No |
| Property Characteristics | None |
| Availability | Online |
| Restricted Use | No |
| Brand | ARCH CHEMICALS |
| Keith's Pro Tips | "While Aquashade does kill some aquatic weeds, it shouldn't be looked at as a lone herbicide for aquatic weed control. Use it in conjunction with herbicides or algaecides for control of surface algae mats or shallow-water plants." |
| Product Drawbacks | This will not produce total aquatic weed control. For most effective results, it is recommended to be used alongside aquatic herbicide. |
| Target Pests | Aquashade Aquatic Herbicide is labeled for use on the following submerged weeds: Bluegreen Algae, Chara, Filamentous Green, Hydrilla, Leafy Pondweed, Naiad, Slender, and Watermilfoil. |
| Application Equipment | Gloves |
| Application Methods | Broadcast Spray |
| Active Ingredient | Acid Blue 9 Dye 12.60% Acid Yellow 23 Dye 1.04% |
| Product Type | Herbicide |
| Formulation | Dye |
| Application Rate | Aquashade can be applied at various rates: 20 fl. oz., 32 fl. oz., 60 fl. oz., or 80 fl. oz. per acre-foot of water body volume. |
| Shelf Life | This will last for years when stored in a cool, dry space. |
| Yield | 1 gallon of Aquashade can treat up to 6.4 acre-feet of water volume. |
| Use Sites | Outdoors |
| Time to Kill | N/A |
| Comparable Products | Vision Pond, Blue Lagoon Dye, SePro Blue Colorant |
| EPA Registration # | 33068-1 |



