Crystal Blue Natural Pond Cleaner – Muck and Sludge Remover, Safe for Koi – 1 Gallon
Original price was: $39.99.$36.99Current price is: $36.99.
Price: $39.99 - $36.99
(as of Nov 01, 2025 11:36:05 UTC – Details)
Product description
Not all bacteria are bad. Bacteria are actually a necessary part of every ecosystem, especially ponds. Without bacteria, muck levels would build up on the pond floor, which in turn provides a food source for growth. Using beneficial bacteria for ponds is a key step to your pond muck removal efforts.
Safe To Use With:
Pets & WildlifeFish SwimmingIrrigationPotable Water 
Super Charge Naturally Occurring Pond Bacteria
Reduces muck, nitrates & phosphates
Just Pour In
One gallon of bacteria will treat approximately one acre of water that averages 4-6 feet deep.
1 No Restrictions
2 Great Pond Maintenance
3 Easy Application
Is Natural Pond Cleaner safe to use with fish?
This product is safe for livestock, recreation, potable water and not harmful to fish.
How often should I use Natural Pond Cleaner?
Bacteria should be reapplied every 30 days, depending on rainfall, runoff, or outflow.
How do I apply this product?
Simply pour directly into pond from the shore.
How much product do I use?
One gallon will treat approximately one acre of water with an average depth of 4-6 feet deep.
When is the best time to use pond bacteria?
Bacteria should be applied when water temperatures are 50F or above.
Formulated For Use With: 
Swimming
Ponds treated with Natural Pond Cleaner can be used recreationally
Pets & Wildlife
Pets, livestock, and wildlife can use body of water treated with Natural Pond Cleaner
Fish
Safe for all fish
Irrigation
Ponds treated with Natural Pond Cleaner can be used for irrigation
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
Adding Natural Pond Cleaner to your pond helps break down muck on the pond floor and reduces nitrates and phosphates, which are two things that can feed the unwanted growth. Our pond bacteria helps maintain pond muck levels and odors that can hurt the healthy balance of your pond or lake.
Step-By-Step Pond Maintenance
When to Apply
Apply February-November
When to Apply
Apply February-November for early season treatment.
When to Apply
Apply April-September for existing filamentous and planktonic algae control.
Benefits
Enhances the color of your pond or lake all year long.
Benefits
Safely and effectively breaks down muck and dead vegetation.
Benefits
Kills algae and maintains water quality.
Products
Crystal Blue, Ocean Blue, Sapphire Blue, Black Out, Water Soluble Packets
Products
Natural Pond Cleaner, Muck Doctor
Products
Crystal Plex, Copper Sulfate, Bloom Buster, Green X
***
When to Apply
Apply April-September for existing filamentous and planktonic algae control.
When to Apply
Apply April-September for weed control.
When to Apply
Apply April-September for cattail control.
Benefits
Kills algae and maintains water quality.
Benefits
Kills submerged weeds that are copper sulfate resistant.
Benefits
Kills emerged rooted weeds down to the root.
SAFELY breaks down pond muck and dead vegetation, also helps neutralize nitrates and phosphates – two things that can feed growth
SUPER charges naturally occurring pond bacteria for a healthy, clear pond
NATURAL bacteria that helps maintain pond muck levels, dead leaves, odors that can hurt the healthy balance of your pond or lake
1 gallon treats 1 surface acre, 4 – 6 feet deep
Customers say
Customers find the pond cleaner effective at controlling algae and breaking down waste, while being safe for fish and easy to use. The product receives positive feedback for its quality and safety, with one customer noting it doesn’t harm frogs. The water clarity and color aspects receive mixed reviews, with some customers reporting clear water while others see no improvement. Value for money opinions are also mixed, with some finding it a great value while others consider it a waste of money.
9 reviews for Crystal Blue Natural Pond Cleaner – Muck and Sludge Remover, Safe for Koi – 1 Gallon
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Original price was: $39.99.$36.99Current price is: $36.99.
Karen –
Perfect Pond Cleaner
This is perfect for our community pond. I tried using the pellets however they didnât work very well. This is perfect , clears the pond water and doesnât harm fish. Definitely will return for more in the future.
Jeremy –
Well worth the money. Highly recommended.
This actually works!! I was using Pondworx for years but this way better at keeping the water clear as well as eating up all the debris. I have .75 acre pond which is up to 20ft deep and one gallon of this made a noticeable difference within days. Using once a month now and even though the water is up to 85 degrees is nice and clear. I do use two large bubblers as well to keep the water moving. Yes itâs slightly more expensive but well worth it! ð
joyce –
Works
Works as described. Reorder all summer.
don j. –
Works
Seems to be working after just one treatment
S. A. ROBBINS –
Must have been water as did nothing.
Total waste of money, had no effect on cleaning our pond.
Lori M. –
Maybe it works?
I think it is helping to clear the water but I don’t see the muck getting better. I will stay with it to give it a fair chance. I say it is helping with clarity because I have a lot more weeds. I assume that’s from increased sunlight
denise crane –
Great product
I haveca small backyard pond that was really murky and dark. I’ve tried a bunch of other products- more expensive ones and this one worked the best. It cleared it up w/i a day and has stayed clear for a week now w/o being retreated. I only used 1 cup and bought the gallon so it will last for a long time. Koi had no reaction to it and pond is crystal clear! Good stuff!
Teresa –
Lake
Good product
Anneke –
This product does what it claims.We had algae building up in two separate areas of our pond, we used Crystal Clear and within two weeks the algae has gone and our pond has never been so clear and our pond fish are still aliveI would highly recommend