Pond Academy

Best Pond Dye That's Safe for Fish In 2021 (Reviews & Comparisons)

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Pond dye is an effective way to add beautiful, bold color to your pond.

It also helps control algae growth and deters predators, keeping your fish safe.

With that in mind, let’s take a closer look at the benefits of using dye in your pond, compare and review the best pond dye products on the market…

And we’ll answer the most popular questions regarding pond dyes.

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Comparison Chart

Description Type Price
Aquashade Aqua Blue Colorant Aquashade Aqua Blue Pond Dye & Weed Control Liquid SEE PRICE »
Pondworx Black Lake & Pond Dye Pond Worx Black Lake & Pond Dye Liquid SEE PRICE »
Pond Logic Dye Packets Pond Logic Pond Dye Packets Packets SEE PRICE »

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Best Pond Dye Reviews

Aquashade Aqua Blue Pond Dye & Weed Control

Aquashade pond dye is a vibrant aqua blue colorant that enhances the look of your pond and provides weed and algae control.

It uses a blend of specific blue and yellow dyes that screen out portions of the sunlight spectrum that are required by underwater plant life and algae to grow. This effectively inhibits photosynthesis and can completely stop growth if applied early in the season.

While this great to control weeds and algae, just keep in mind if you have any submerged plants they may be affected. Floating and emergent pond plants like lilies should be OK.

Aquashade pond dye is EPA registered and safe for fish and animals.

How To Use

  • Pour 1 gallon per 1 acre (average depth of 4 feet) directly into your pond.
  • Speed up the dye dispersion by pouring into several different areas of your pond.
  • Start applying product early in the season for best weed and algae control. Continue treatments every 30 days or as desired.

Aquashade Aqua Blue Pond Dye & Weed Control

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Aquashade Aqua Blue Colorant & Weed Control

Pond Worx Black Lake & Pond Dye

Pond Worx Lake & Pond Dye is an ultra-concentrated colorant that is 4 times stronger than their competitors. What this means is that their small quart sized bottle will treat the same amount of area as their competitor’s gallon-sized bottle. Essentially, less product you must dump into your pond and at a potentially cheaper cost.

Pond Worx dye is 100% non-toxic and safe for fish, livestock, and humans.

Their black pond dye gives your pond water a very natural, reflective appearance. It’s commonly used in golf course ponds across the country but is gaining in popularity in backyard ponds.

Pond Worx dye is available in black and blue colors and lasts up to 30 days.

How To Use

  • Pour 1 quart for every acre (average depth of 4-6 feet) directly into the pond.
  • The colorant will disperse through the water over the next 24-48 hours.
  • The desired water color is largely based on personal preference, so you may need to add more or less for best results.
  • Continue treatments every 30 days to retain color

Pond Worx Black Lake & Pond Dye - 1 Quart

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Pondworx Black Lake & Pond Dye

Pond Logic Pond Dye Packets

Pond Logic dye packets are just that, dissolvable packets you place directly your pond water to achieve a bright, rich blue color.

Two of the Pond Logic packets are equal to a gallon of liquid dye. So, essentially two packets will treat a 1-acre pond that is roughly 4 to 6 feet deep. And they come in 4 packets per case.

Although it’s personal preference, some argue that packets are more convenient and create less mess than the liquid form of pond dye.

Pond Logic Dye Packets are available in two colors: Nature’s Blue and DyeMond Black. They are also safe for fish, livestock, and humans.

How To Use

  • Simply toss 1 packet into your pond for every half acre of water.
  • Add product in early spring for best results. Continue treatments every 4-8 weeks thereafter as desired.

Pond Logic Pond Dye Packets

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Pond Logic Dye Packets

Benefits of Pond Dye

Adding dye to your pond, whether it’s a small backyard pond or large fish pond (and everything in between), can have several important benefits. Let’s take a look at why you might want to start using pond dye today.

Dramatic Color Effect

Of course, the most obvious benefit of using pond dye is its ability to completely transform the appearance of a pond in as little as 24 hours. In fact, this is arguably the most common reason that pond owners buy pond dye.

If your pond water Is looking a little boring or just plain dull, a pond colorant can bring it to life in a way that you have to see to believe.

When properly dosed, pond dyes will add rich, vibrant color to your pond's water (typically blue or black and even red) for 30 days or more. Algae control and predator deterrent are simply added benefits to many pond owners beyond aesthetic reasons, which brings us to…

Algae & Weed Control

Not only can pond dye turn a drab pond into a beautiful oasis, it can also help control algae and submerged pond weeds!

Pond dyes prevent UV light from penetrating the surface of the water, which is needed for algae and weeds to grow. When applied in early spring before algae and weeds really start to bloom, you can easily keep them under control.

Some dyes, like Aquashade Pond Dye & Weed Control, use special blue and yellow colors designed to block out parts of the sunlight spectrum that are required by algae and weeds to grow.

Aquashade Aqua Blue Pond Dye & Weed Control

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Aquashade Aqua Blue Dye & Weed Control

Keep in mind, if your water is already infested with pond scum or you have weeds poking up out of the surface, then pond dye won’t be effective at killing them off. You’ll have to first remove the troublesome algae and weeds and then add in the pond dye to help prevent It from returning.

Predator Deterrent

Pond dye can also help deter predators from attacking your pond fish!

The dye makes it harder for birds and overhead predators like herons to see fish swimming near the bottom of the pond. And pond dyes, especially black, can create a reflective surface making it hard for predators to see in the water at all.

Even some land animals may be turned off by the odor and sight of ponds that are dyed.

Pond Dye Colors

Pond dyes are available in a few different colors, some more popular than others.

Blue Pond Dye

Arguably the most popular pond colorant, blue dyes give your pond a clean and natural look. Blue dye really becomes aesthetically pleasing when you have lots of green foliage surrounding your pond.

You’ll find that there is a range of different blue colors available, from dark blue to a light crystal blue. How much colorant you use, and the condition of your pond will also play a factor in the specific color of blue your pond turns.

Blue dye is good at helping control the growth of algae and helping to deter predators from fish that like to swim near the bottom of your pond.

Pond Logic Pond Dye Packets

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Pond Logic Dye Packets

Black Pond Dye

Black dyes create a reflective surface on your pond, which can create a visually appealing experience if you have lots of trees and foliage reflecting in your pond.

Black dyes are extremely effective at protecting pond fish from predators as the ultra-reflective surface it creates make it hard for predators to see through the surface of the water.

They are also good at controlling algae as they block UV light that is required by algae and other plant life to grow.

Pond Worx Black Lake & Pond Dye - 1 Quart

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Pond Worx Black Dye

Red Pond Dye

Easily the least popular of all pond dyes, red dye is sometimes used to add flair and dramatic effect to small ornamental ponds, ponds found on goofy golf courses and the like.

It’s also sometimes used for specific occasions, for example, to color a pond red on Valentine’s day or for awareness campaigns.

FAQ’s

Is Pond Dye Safe For Fish?

Yes, most quality pond dyes will be safe for fish. Just be sure to choose a non-toxic colorant and make sure the label says it’s safe for use in fish ponds.

Adding a safe, non-toxic dye to your koi pond, for example, Is not only safe, but it may also even help protect them from predators like heron.

How Long Does Pond Dye Last?

It really depends on the brand and how much pond dye you added to your specific sized pond. With that said, using the recommended amount of pond dye per acre as stated on the packaging, most brands of dye will last for 30 days. Keep in mind, things like rain and runoff can affect how long the dye will last.

Does Pond Dye Kill Algae?

Pond dye does not kill algae, instead, it helps prevent algae from growing in the first place. It does this by blocking the UV light needed for algae and other submerged plant life to grow.

Aquashade pond dye even uses a specific blend of blue and yellow dyes in its product to aid in blocking sunlight needed for photosynthesis.

Aquashade Aqua Blue Pond Dye & Weed Control

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Aquashade Aqua Blue Dye & Weed Control

Does Pond Dye Kill Duckweed?

No, pond dye does not kill duckweed. It can, however, help control it. It does this not by blocking UV light from reaching duckweed (remember, duckweed is a floating plant so the sun can still reach it), but rather pond dye will stop UV light from penetrating the water and slowing the breakdown of organic matter on the bottom of the pond. This will effectively reduce the number of nutrients required for duckweed to grow.

If duckweed is a problem in your pond, check out our guide on how to get rid of duckweed in a pond naturally.

What Is Pond Dye Made Of?

While it varies by brand and color, pond dyes are typically made with non-toxic, food-grade coloring that is safe for fish, animals, and humans. For example, Aquashade Pond Dye uses acid blue #9 and acid yellow #23 as its active ingredients. Each brand is going to have different ingredients so it’s best to reach out to the specific manufacturer for a full ingredient list if you have any concerns.

Aquashade Aqua Blue Pond Dye & Weed Control

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Aquashade Aqua Blue Pond Dye & Weed Control