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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

CrystalClear Algae D-Solv Pond Algae Control Treatment, for Cleaner & Clearer Pond Water, EPA Registered Algaecide, Safe for Ponds Containing Fish and Plants, Treats 5,760 Gallons, 16 Ounces

Product ID: 716524401

Details

Brand
CrystalClear
Liquid volume
16 Fluid
Item weight
16 Ounces
Item form
Liquid
Manufacturer
Airmax

⚡Fast-acting algae control

🐟Safe for fish & plants

💧Treats up to 5,760 gallons

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

€ 61.29

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Spain.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

💦 Clear Water, Clear Mind — Don’t Let Algae Crash Your Pond Party!

RAPID ALGAE KNOCKOUT - Apply as needed for immediate algae bloom control and maintain weekly for lasting clarity.
ECO FRIENDLY POND CARE - Gentle on fish, ornamental plants, pets, and pond wildlife when used as directed—because your ecosystem matters.
CRYSTAL CLEAR NO GREEN FEAR - EPA-registered formula that swiftly eliminates string algae, blanket weed, and green water for pristine ponds.
TRUSTED EXPERTISE IN EVERY DROP - Backed by 20+ years of water garden and koi pond care experience, ensuring reliable and consistent results.
MASSIVE COVERAGE MINIMAL EFFORT - One 16 oz bottle treats up to 5,760 gallons, perfect for large ponds and enclosed water features.

CrystalClear Algae D-Solv is a powerful, EPA-registered liquid algaecide designed to quickly eliminate and control algae in ponds up to 5,760 gallons. Safe for fish, plants, and pond wildlife, it offers fast-acting treatment with trusted expertise from over 20 years in water garden care.

Specifications

ASIN	B01N3UW3OR
Brand	CrystalClear
Brand Name	CrystalClear
Customer Reviews	4.1 out of 5 stars 2,296 Reviews
Included Components	CrystalClear Algae D-Solv - Registered Algaecide
Item Form	Liquid
Item Weight	16 Ounces
Item form	Liquid
Item weight	16 Ounces
Liquid Volume	16 Fluid Ounces
Liquid volume	16 Fluid Ounces
Manufacturer	Airmax
Target Species	Fish
UPC	813166021228

Reviews

C**.

It worked, it really worked! With one caveat.

26.09.2023

C**E

Algae killer

6.01.2026

A**R

Good value.

28.12.2025

R**Y

Green pond

28.07.2025

W**N

Good for outdoor fountains

27.07.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.