Pond Care

Maintain your pond year-round for clear, healthy results. Discover tips for each season, water value testing and our handy pond calendar.

Thread algae

Mucous and filamentous algae Thread and slime algae have low temperature and water quality requirements. They can grow under conditions where micro life and aquatic plants cannot yet develop optimally. In addition, they absorb nutrients and trap sunlight so aquatic plants have less of a chance. As their name implies, filamentous algae are thread-like. Long […]

Beard Algae

Beard Algae Beard algae is also called black tip algae or red algae. It is actually a fluffy tuft of algae together, shaped like a beard, hence the name. In some cases, this alga results in longer strands. In many cases, the alga results from too little or unstable CO2 levels. A constant CO2 supply […]

Float Algae

Float algae or green pond Green pond water is created by floating algae and is therefore especially common in young ponds with nutrient-rich water. They develop at lightning speed. Besides turning the pond water into a green mush, it is also annoying that the growth of your oxygen plants stagnates. These minuscule algae float loose […]

Algae removal

Remove algae and restore balance to your pond Algae in your pond can be an eyesore, but with the right approach, you can enjoy crystal clear water and a healthy pond environment. Find out how to effectively control algae and prevent future problems with our helpful tips and products. Understand the causes of algae growth […]

Blue-green algae

Blue-green algae Blue-green algae are not actually algae, but cyanobacteria, which are among the oldest organisms on earth. They do resemble algae and can be recognized by their usually dark blue-green color. They form kind of “sheets” or “oval balls” about the size of a marble and smell bad and they feed on ammonium. So […]

Brown Algae

Brown Algae Brown algae that grow in ponds often form a firmly attached brown layer on the pond walls. Brown algae require very little nutrients and attach to pond walls with calcium. They also require little light and can live in deep water. Removing brown algae If you want to make and keep your pond […]

PondTestApp

Water testing is about to undergo revolutionary changes Pond Test App for smartphone or tablet Pond professionals and hobbyists can easily determine and store water values with the Pond Test App. The user then receives a clear pond diagnosis and improvement tips from Velda, tailored to his/her own pond situation.   How does analyzing new […]

GH value

GH value The combined hardness of water is determined by calcium and magnesium. This is called the GH value of the water and is expressed in German hardness degrees (°dH). A proper GH value for pond water is between 8° and 12° dH. This is important for several reasons. Most types of pond plants grow […]

KH value

KH value The carbonate hardness or KH value, is an important pillar in the pond environment. The KH value is called temporary hardness. It is also referred to as the acid-binding capacity. Carbonate is created by binding free carbonic acid (CO2) to calcium and or magnesium. It thus forms a carbonic acid (CO2) source for […]

Water Testing Days

Velda water testing days About ponds and pond water quality we can tell you a lot. That’s why we organize water test days. You can then have your pond water analyzed for free. During these water test days, the pond specialists from Velda get a good understanding of your total pond situation. Based on the […]

Pond water testing

Healthy pond water starts with proper testing Why is water testing so important? Your pond is a precious ecosystem. Just as you regularly check your health, your pond deserves the same attention. A healthy water balance means: Healthy and active fish Clear water without algae Lush plant growth Less long-term maintenance   What do you […]