

Shipping policy
Free shipping on orders totaling more than $150. For orders less than $150, please add $12.00 for shipping costs. Please provide a physical address, we cannot ship to a P.O. Box. All shipments are made via FedEx Ground or UPS Ground. Please call toll-free 1-866-869-8521 for more information.
Disclaimer
Some states have special restrictions on the use of aquatic herbicides and algaecides. Therefore, Sonar, Renovate 3, Captain, AquaPro and Nautique cannot be sold through SePRO's direct consumer business in AK, CA, CT, ME, NJ, NY and WA. Revive, SePRO Blue and Natural Reflection can be sold in these states. Consult with appropriate state or local water authorities before applying these products. Some states may require an aquatic permit, notification prior to application, or have other conditions of use for aquatic products. VISA, MasterCard, Discover and American Express cards accepted. SePRO Corporation reserves the right, to be exercised at its sole discretion, to revise prices, limit quantities and correct pricing errors. Special offers and/or discounts are valid only at the time of order. Customer is responsible for collection fees, court costs and reasonable attorney fees to collect an unpaid account.
Disclaimer
Some states have special restrictions on the use of aquatic herbicides and algaecides. Therefore, Sonar, Renovate 3, Captain, AquaPro and Nautique cannot be sold through SePRO's direct consumer business in AK, CA, CT, ME, NJ, NY and WA. Revive, SePRO Blue and Natural Reflection can be sold in these states. Consult with appropriate state or local water authorities before applying these products. Some states may require an aquatic permit, notification prior to application, or have other conditions of use for aquatic products. VISA, MasterCard, Discover and American Express cards accepted. SePRO Corporation reserves the right, to be exercised at its sole discretion, to revise prices, limit quantities and correct pricing errors. Special offers and/or discounts are valid only at the time of order. Customer is responsible for collection fees, court costs and reasonable attorney fees to collect an unpaid account.
Overview
Controls 65+ Aquatic Weeds
Kills, Duckweed, Hydrilla, Milfoil, Pondweeds, and other listed aquatic weeds.
Systemic Control
Sonar RTU travels throughout the entire plant AND roots to provide long-term control.
Only Works On Plants
Continue to enjoy your water while Sonar RTU does the work! NO fishing, swimming, or animal restrictions.
WHEN TO APPLY
See Label For More Details
Apply at the first signs of new weed growth or when weeds are actively growing
Spring
Summer
Fall

WHERE TO APPLY
Use As a Full Waterbody Solution For 95% Of All Weed Types Out There
Lakes, Backyard Ponds, Farm Ponds, Fire Ponds, Retention Ponds, Lagoons
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Key Features
- No Mixing Needed
- No Spray Equipment Needed
- No Boat Needed
- Take control of troublesome pond weeds including Duckweed.
Seasons of Usage
- Spring
- Summer
- Fall
Where to Use
Lakes, Backyard Ponds, Farm Ponds, Fire Ponds, Retention Ponds, Lagoons
When to Use
Apply at the first signs of new weed growth or when weeds are actively growing
Shipping Restrictions
Cannot ship to WA, PR, NY, NJ, ME, CT or AK
Area Coverage
Apply 8 quarts per surface acre (with a 4-6ft average depth).
Labels
Safety Data Sheet
How to Use

Step 1
Determine the amount to use by measuring the total size of waterbody.Step 2
Shake bottle and pour directly into waterbody.Step 3
Repeat per label on day 21 and day 42 following the rate chart for your treatment area.
Sonar RTU Application Rates/Timing Table
See label for complete use directions.
Pond Size | Acres | Total Sonar Needed (Bottles Needed) | Day 1 (Application Amount) | Day 21 (Application Amount) | Day 42 (Application Amount) |
5,445 | 1/8 | 32 oz. (1 qt.) | 16 oz. | 8 oz. | 8 oz. |
10,890 | 1/4 | 64 oz. (2 qt.) | 32 oz. (1 qt.) | 16 oz. | 16 oz. |
14,520 | 1/3 | 96 oz. (3 qt.) | 48 oz. | 24 oz. | 24 oz. |
21,780 | 1/2 | 128 oz. (4 qt.) | 64 oz. (2 qt.) | 32 oz. (1 qt.) | 32 oz. (1 qt.) |
32,670 | 3/4 | 192 oz. (6 qt.) | 96 oz. (3 qt.) | 48 oz. | 48 oz. |
43,560 | 1 | 256 oz. (8 qt.) | 128 oz. (4 qt.) | 64 oz. (2 qt.) | 64 oz. (2 qt.) |