My rocks are still covered in algae after two applications: any tips?

When using CrystalClear Algae D-Solv, make sure to clean the excess algae off the sides, ornaments, and rocks before adding this product. This will reduce the amount of decaying organic matter. Also, you will get the best results using this product in conjunction with vigorous aeration and then following up with beneficial bacteria.

Is this product safe to use on water features that attract birds?

Sorry don’t know. Ask manufacturer

How much for a 300 hondred gallon pond

Dilute 1 ounce of CrystalClear Algae D-Solv for every 360 gallons in a container of pond water. Pour the solution into the pond in an area with the greatest circulation. You will see the best results using Algae D-Solv in conjunction with vigorous aeration.

I just have a small fountain, how much should I use for 4 gallons?

Guessing teaspoon. A small portio you’d use in a koi pond. Read instruction. Use a small % of that. We have 2 koi ponds 4x16x2 feet and 4 ft wide and 2 feet deep x 22 feet long.

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Algae D-Solv Pond Algae Control, Fast-Acting EPA Registered Algaecide, Use in Fountains & Outdoor Ponds Containing Koi & Other Fish, Treats 5,760 Gallons, 16 Ounces

Algae D-Solv Pond Algae Control, Fast-Acting EPA Registered Algaecide, Use in Fountains & Outdoor Ponds Containing Koi & Other Fish, Treats 5,760 Gallons, 16 Ounces

Product ID: 66837404

Details

Brand
CrystalClear
Item Form
Liquid
Item Weight
16 Ounces
Liquid Volume
16 Fluid
Unit Count
16.0 Fluid

⚡Fast-acting algae control

🌿Copper-free, plant-friendly

🐟Safe for koi & fish

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Description

🌊 Clear water, happy fish, zero hassle—your pond’s new best friend!

VERSATILE USE - Perfect for fountains, ponds, and water gardens—your all-in-one algae solution.
BROAD SPECTRUM POWER - Targets green water, string algae, and blanketweed for total pond revival.
FISH FLORA FRIENDLY - Copper-free formula protects your koi and ornamental plants effortlessly.
EFFORTLESS APPLICATION - Just 1 oz per 360 gallons—pour, relax, and watch clarity return.
RAPID ALGAE ERADICATION - Clears up to 5,760 gallons fast—no more green water FOMO.

CrystalClear Algae D-Solv is a fast-acting, EPA-registered liquid algaecide designed to control various algae types in ponds and fountains up to 5,760 gallons. Its copper-free formula ensures safety for koi, ornamental plants, and fish when used as directed with proper aeration. Easy to apply and effective across multiple water features, it reduces maintenance by quickly restoring crystal-clear water.

Specifications

ASIN	B01N3UW3OR
Best Sellers Rank	#1,250 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #7 in Water Garden & Pond Treatment
Brand Name	CrystalClear
Customer Reviews	4.0 4.0 out of 5 stars (4,128)
Included Components	CrystalClear Algae D-Solv - Registered Algaecide
Item Form	Liquid
Item Weight	16 Ounces
Liquid Volume	16 Fluid Ounces
Manufacturer	Airmax
Manufacturer Part Number	CC073-16
Model Number	CC073-16
Pet Type	Fish
Target Species	Fish
UPC	813166021228
Unit Count	16.0 Fluid Ounces

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