Carolyn Weise is the customer relations manager for Ecological Laboratories, Inc. She studied ornamental horticulture at the State University of New York at Farmingdale. She moved to Florida in 2006 to work at the Cape Coral campus of Ecological Laboratories. Today, Carolyn serves as a liaison to koi clubs and recently joined the master gardener’s program in Lee County. She loves her work. For additional information on pond management, nitrification and denitrification, contact her at
Winter Pond

Winter Pond Preparations

By Carolyn Weise / August 27, 2023 / 0 Comments

Ponds in areas that can reach freezing temperatures need special attention to ensure any fish can survive the winter. If this is your customer’s first winter with their beautiful koi pond, they need to know that there are some changes in the pond that cannot be avoided as the fall season heads into winter. In […]

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Koi Diah

Why Koi Fish Die and How to Help Them

By Carolyn Weise / March 28, 2023 / 0 Comments

SPONSORED CONTENT Koi fish do not always die from parasites, worms, or disease. In fact, one might be surprised to know what one of the leading causes of koi fish death is. This might seem like something small at face-value, but the reality is that stress is a major perpetrator in what may end up […]

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The language of koi

Language of Koi | Speaking the Language of Koi

By Carolyn Weise / June 28, 2022 / 0 Comments

We all know that koi can’t talk. So, what do we mean by the language of koi? Before you bought your first koi (and became koi kichi), I’m sure you saw the big red and white fish at the koi shows and went home to tell your friends about the beautiful, “big red and white […]

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Troubleshooting Unusual Pond Koi and Water Quality Problems

By Carolyn Weise / October 29, 2021 / 2 Comments

We recently received a call from a customer who reported something they had not seen in more than 46 years. Their pond had been rebuilt last season, and the rebalancing act had become a bit of a mess, thanks in part to this season’s extremely hot weather. After getting the water quality in check, they […]

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Prevent Fish Lice, Anchor Worm and Other Pond Bugs

By Carolyn Weise / February 26, 2021 / 0 Comments

There are bugs — and then there are bugs when it comes to our koi. In this article, we are going to forget about the familiar Ich that every hobbyist thinks of first when their fish start flashing. We can also forget about the internal cestodes, like internal flukes and tapeworms — the ones that […]

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The Role of Ammonia in Managing Aquatic Ecosystems

By Carolyn Weise / February 28, 2020 / 0 Comments

No two ponds are alike. However, the common biological processes within every pond’s ecosystem are essential and must be carefully monitored and maintained. No matter what type of construction or filtration you select, a successful, healthy ecosystem will depend on the level of pond management, the fish load, the amount of food added and the […]

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Polyquat Algaecide: How Does it Affect the Ecosystem?

By Carolyn Weise / October 26, 2017 / 3 Comments

A common challenge we have all faced is finding a suitable way of removing algae in decorative fish ponds that will be safe for both fish and aquatic plants. For many years, ponds had come to depend upon copper-sulfate to clear green water and string algae in farm ponds. However, we soon learned that carp […]

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How Many Fish Can This Pond Hold?

By Carolyn Weise / September 1, 2014 / 0 Comments

New pond owners do their best to keep their fish healthy and happy. But thanks to the rapid breeding and growth rates of many fish, even the most well-intentioned fishkeepers can find their ponds dangerously overstocked in a matter of months. Carolyn Weise describes the circumstances that can turn a happy pond into a cramped, unhealthy habitat — and the steps you can take to prevent the transformation.

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Bio-Security in Ponds

By Carolyn Weise / March 1, 2014 / 0 Comments

Prior to the initial outbreak of KHV in the United States, the worst thing we had to deal with was the dreaded Aeromonas in koi ponds. Read along as Carolyn Weise of Ecological Laboratories describes the details and dangers of the KDV outbreak.

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The Water Treatment Plant in your Backyard

By Carolyn Weise / January 1, 2014 / 1 Comment

Imagine a pond of immense beauty with beautiful plants, plenty of wildlife — and very little hard work involved! Sounds like a wonderful but unrealistic fantasy, doesn’t it? According to the experts at Ecological Laboratories, Inc., gorgeous and low-maintenance ponds are well within reach for even the busiest people. The secrets, they say, can be found in sophisticated wastewater treatment plants!

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