UltraClear Biological Clarifier – Beneficial Bacteria for Ponds

Eliminates Cloudy Water and Foul Odors Fast

$19.99

Beneficial bacteria and enzymes help break down suspended organics
Supports clearer water and ongoing pond balance
1 fl oz treats 1,000–2,500 gallons at the weekly rate
For spring startup, maintenance and recurring cloudiness
Safe for fish, plants and wildlife when used as directed

Size

12 oz

32 oz

1 Gallon

$19.99

Description

Support clearer pond water with beneficial bacteria.

UltraClear Biological Clarifier helps break down the suspended organic debris, fish waste and other material that contribute to hazy pond water. Use it for spring startup, weekly maintenance or recurring cloudiness.

Work on the cause of organic cloudiness

Biological action: beneficial bacteria and enzymes help reduce organic buildup.
Concentrated care: 1 fl oz treats 1,000–2,500 gallons at the recommended weekly rate.
Ongoing support: helps maintain clarity and pond balance through regular use.
Easy application: shake, measure and distribute evenly.
For living ponds: safe for koi, goldfish, aquatic plants and wildlife when used as directed.

Weekly dosing guide

Up to 500 gallons: 3 capfuls.
500–1,000 gallons: 6 capfuls.
1,000–2,500 gallons: 1 fl oz.
2,500–5,000 gallons: 2 fl oz.
5,000–10,000 gallons: 4 fl oz.

Use the product cap and follow the directions on your bottle. For help estimating pond volume, use our pond calculator.

Match the routine to your pond

Spring startup: apply the recommended dose for 3 consecutive days, then switch to weekly maintenance.
Maintenance: apply the recommended dose once a week or as directed on the label.
Problem ponds: apply the recommended dose 2–3 times per week until conditions improve, then return to maintenance.

Shake well. For even distribution, dilute the measured dose in 2–3 gallons of water and pour around the pond perimeter. Start seasonal use when pond water reaches 50°F. Results depend on pond conditions and organic load.

Choose a bottle

Available in 12 fl oz, 32 fl oz and 1 gallon sizes. Larger bottles provide more repeat treatments at the same dosing rate.

Common questions

How is Biological Clarifier different from a flocculant?

Biological Clarifier uses bacteria and enzymes to help break down organic material. A flocculant binds fine particles together so they can settle or be filtered out.

Is this for bottom sludge?

This formula focuses on suspended organics and water clarity. For accumulated bottom muck, see Muck Digester Tabs.

Can I use it during colder months?

For cold-season care, choose a cold-water formula such as Cold Water Muck & Sludge Remover and follow that product's directions.

Support clearer pond water with beneficial bacteria.

Work on the cause of organic cloudiness

Biological action: beneficial bacteria and enzymes help reduce organic buildup.
Concentrated care: 1 fl oz treats 1,000–2,500 gallons at the recommended weekly rate.
Ongoing support: helps maintain clarity and pond balance through regular use.
Easy application: shake, measure and distribute evenly.
For living ponds: safe for koi, goldfish, aquatic plants and wildlife when used as directed.

Weekly dosing guide

Up to 500 gallons: 3 capfuls.
500–1,000 gallons: 6 capfuls.
1,000–2,500 gallons: 1 fl oz.
2,500–5,000 gallons: 2 fl oz.
5,000–10,000 gallons: 4 fl oz.

Use the product cap and follow the directions on your bottle. For help estimating pond volume, use our pond calculator.

Match the routine to your pond

Spring startup: apply the recommended dose for 3 consecutive days, then switch to weekly maintenance.
Maintenance: apply the recommended dose once a week or as directed on the label.
Problem ponds: apply the recommended dose 2–3 times per week until conditions improve, then return to maintenance.

Choose a bottle

Available in 12 fl oz, 32 fl oz and 1 gallon sizes. Larger bottles provide more repeat treatments at the same dosing rate.

Common questions

How is Biological Clarifier different from a flocculant?

Biological Clarifier uses bacteria and enzymes to help break down organic material. A flocculant binds fine particles together so they can settle or be filtered out.

Is this for bottom sludge?

This formula focuses on suspended organics and water clarity. For accumulated bottom muck, see Muck Digester Tabs.

Can I use it during colder months?

For cold-season care, choose a cold-water formula such as Cold Water Muck & Sludge Remover and follow that product's directions.

Frequently Asked Questions

What does UltraClear Biological Pond Clarifier do?

It uses natural, beneficial bacteria to break down organic waste, sludge, and excess nutrients that cause cloudy water, foul odors, and algae growth—keeping your pond clear and balanced without harsh chemicals.

Is UltraClear Biological Pond Clarifier safe for fish and plants?

Yes. It’s 100% biological and non-toxic, making it completely safe for fish, plants, wildlife, and pets when used as directed.

How often should I apply the product?

For best results, dose weekly during the warm months when water temperature is above 50°F. In heavily loaded ponds, you may use it twice-weekly until clarity improves.

Can I use it with UV clarifiers or algaecides?

Yes, but for maximum bacterial effectiveness, turn off your UV clarifier for 24–48 hours after each UltraClear treatment. Avoid using chemical algaecides simultaneously, as they can reduce bacterial activity.

How long does it take to see results?

You’ll typically notice improved clarity and reduced sludge within 1 day, with the full results visible in 7–14 days of consistent use, depending on pond size, temperature, and nutrient levels.

What’s the difference between UltraClear Biological Pond Clarifier and UltraClear Muck Digester Tabs?

The Pond Clarifier treats the entire water column for overall clarity and nutrient reduction, while Muck Digester Tabs target bottom sludge directly. Many pond owners use both for best results.

Can I use this in my koi pond or decorative water feature?

Absolutely. UltraClear is ideal for koi ponds, ornamental water gardens, fountains, and any natural or lined pond system.

How and how often should I dose UltraClear Biological Pond Clarifier?

Dosing depends on your pond size and condition. Reference the dosing chart on the product label, or the product detail page. We recommend 1 oz per 2,500 gallons applied weekly. For Spring Prep, we recommend a daily maintenance dose applied for 3 consecutive days. For problem ponds, apply 2–3 times per week until the issue resolves.

How do I apply UltraClear Biological Clarifier?

Shake well, dilute the measured dose with ~2–3 gallons of water and pour evenly around the perimeter of the pond to ensure good distribution.

5 stars: 10 (71%)
4 stars: 0 (0%)
3 stars: 0 (0%)
2 stars: 3 (21%)
1 star: 1 (7%)

Didn't work at all, followed the instructions, it was a rip off

Pond

We love this product to keep our pond clear.

Did nothing!

It did not work

Keeps my pond clear

Getting ready to order my 4th bottle. My pond is only about250 gallons, so it lasts. I've had my pond (koi, goldfish etc) for 20 years and tried many products. This is by far the best.

works great

fish are happy

Great Customer Service

Had a problem with an order and they quickly made it right. Good prices on products. I will continue to buy from this seller.

3day spring startup treatment

this product is amazing! we have not seen the bottom of our pond in the two years we’ve lives at this house. (the pond came with the house) now we can completely see everything on the bottom, after doing the 3 day spring start up dose! we will definitely continue to use this product.we have spent hundreds of dollars trying to fix this pond dumping countless chemicals and hours of work into it. nothing worked until this product.

Product works great!

I have used this product for 2 years on my 800gal. Koi pond. Everyone always comments about the clearity of the pond and I owe it to this product. I use 1 cup every 2 weeks when I clean my bio filter and the pond stays crystal clear, koi are very active and happy in their environment. Thanks for a stand up product!!!

Great product, works well

Just as described, a little expensive, but works very well

Awesome experience

Perfect product super fast!

Two Stars

I used this weekly as it directed, I didn't see any difference in my pond.

Five Stars

Excellent

Five Stars

works great

Too little improvement, too often

Only worked one day.

UltraClear Biological Clarifier – Beneficial Bacteria for Ponds

Description

Work on the cause of organic cloudiness

Weekly dosing guide

Match the routine to your pond

Choose a bottle

Common questions

How is Biological Clarifier different from a flocculant?

Is this for bottom sludge?

Can I use it during colder months?

Work on the cause of organic cloudiness

Weekly dosing guide

Match the routine to your pond

Choose a bottle

Common questions

How is Biological Clarifier different from a flocculant?

Is this for bottom sludge?

Can I use it during colder months?

Frequently Asked Questions

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Company

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