improve the water quality of fish pond black water There are many reasons for fish pond black water, usually because some algae are single or because of excessive organic matter. If we want to solve this problem, we need to supplement probiotic bacteria regularly, which can enhance the decomposition of organic matter in the water body, enrich its nutrients, promote the growth of beneficial algae, and avoid some algae becoming dominant algae. In addition, water should be added and changed. If fertilizer is applied before, fertilizer should be stopped, feed should be reduced, and some water quality improvers should be used.
form? 1. Cryptophyta: Cryptophyta is a kind of algae with strong adaptability. It does not require high nutrition in the water body, and it does not need long-term light, so it is easy to become a dominant algae. This black water is brown when it is removed and black from a distance. If you want to judge whether it is this kind of algae, you can put it in a bottle in the water. If there are a lot of bubbles on the wall of the bottle and there is no black on the upper layer of the light, it means that it is cryptophyta.
2. Gonystoma: Gonystoma is a kind of algae with strong phototaxis, and its adaptability is also good. Once it becomes the dominant algae, it will also make the water body black, and it is easy to die in large numbers, thus causing great harm to the water quality. The way to judge the gonystoma is also to put the water into the bottle. If the black on the upper layer is very thick, it means that it is this kind of algae.
3. Organic matter: Too much accumulation of organic matter can also cause black water, indicating that too much manure is applied to the feed at ordinary times, and the decomposition capacity of the water body is insufficient, so the water is black. When this water is filled into a bottle, there are usually no bubbles, or very few bubbles, and particles will settle at the bottom of the bottle.
