What causes a layer of black dirt on the leaves of aquatic plants?

First, water quality problems.

Reason: The black leaves of aquatic plants are likely to be water quality problems, and the amount of water changed at one time is too much, and the water quality changes, and the aquatic plants are difficult to adapt to the phenomenon of black leaves.

Solution: Change a small amount of water every time you change it, just add a small amount of new water. A small amount of each time, change frequently, which can not only ensure that the water is clean, but also the aquatic plants can quickly adapt to it, which can effectively avoid the phenomenon of yellow leaves.

Second, the light is too strong.

Reason: There are many varieties of aquatic plants, but most of them are afraid of strong light environments. If it is exposed to strong light, it will sunburn aquatic plants, resulting in yellow leaves and black leaves.

Solution: If the light is too strong, you should avoid it as soon as possible or block it in time, do not expose it to the sun, and let it bask in weak astigmatism every time. And note that the brother is prepared for the duration of the light, not too long.

Envy is ruined but can not be without receiving light for a long time, and the shady environment is also easy to lead to yellow leaves, black leaves.

Third, the temperature is too high.

Reason: Aquatic plants do not like high temperatures. If the water temperature is too high, it will not be able to adapt, and the leaves will slowly turn black over time.

Solution: When the temperature is high, the temperature should be controlled, and the ambient temperature should be lower, so that the water temperature will be low. If the water temperature is high, add an appropriate amount of new water to cool down.

The main reasons why the leaves of aquatic plants turn black:

1. Changes in water quality.

When changing the water, if the amount of water is changed too much, the water quality will change suddenly, and the leaves will turn black.

Second, the light is too strong.

If the light is too strong and the wavelength of the light is not suitable, the leaves will also turn black.

3. Discomfort with growth conditions.

If the temperature is too high and the fertilizer is not suitable, it will also make the leaves black.

Iron deficiency is most likely to occur in aquatic weed aquariums, and most of the problems of yellowing of aquatic weeds are usually caused by iron deficiency. At this time, ferrous sulfate should be added to the water, and in order to prevent ferrous ions from being oxidized to ferric ions, it should be applied with the integrator EDTA. The concentration should be controlled per cubic meter, too much iron will disperse manganese and other trace elements in the water, and will also produce iron phosphate precipitation.

Iron deficiency can cause disease, and aquatic plants will also get sick when there is too much iron. Therefore, it is necessary to change the water in time when the ferrous ions are applied in excess of each cubic meter. Symptoms of iron deficiency are brown or black on the leaf surface and veins due to the precipitation of iron phosphate in the tissues, with white leaf spots.

In severe cases, the entire aquatic weed tissue will disintegrate. The method of prevention and control is to change the water to dilute the iron content.

Treatment method for blackening aquatic weeds:

1. Change the water immediately. Water change is the most direct and effective way to remove excessive putrid organic matter in the pond and increase the dissolved oxygen in the pond. The water body should also be oxygenated by turning on the aerator.

2. Salvage necrotic aquatic weeds. Fish out the necrotic aquatic weeds in the pond, and clean up all the oil film and floating rotten grass at the pond downstream.

3. Bottom reform. If the aquatic weeds rot and the water body is blackened, there must be a large number of rotten aquatic weeds at the bottom of the pond, and the bottom of the pond is extremely hypoxic, so it is necessary to improve the bottom environment of the pond through bottom reform. EM bacteria can be put in the morning for bottom modification.

If it's black, the grass is dead, are you buying grass that doesn't have anti-water? Is it grass without roots? If not, it's a matter of light and water. Aquatic plants are generally not black.

This leaf died, and if it wasn't the water quality, the light, or the aquatic plants themselves.

If you have black algae, cut off the black leaves and change the water frequently.

It is possible that the water is contaminated, so change the water.

The following points should be paid attention to in the cultivation of aquatic weeds after the leaves turn black:

1. The amount of water exchange should not be too much: when the water is changed, the amount of water is too much, and the water quality will suddenly change, and the leaves will turn black;

2. Do not place aquatic plants in a place where the light is too strong: if the light is too strong and the wavelength of the light is not suitable, the leaves will also be blackened;

3. Control the amount of additives: the fertilizer is not suitable for use, and whether carbon dioxide is added or not, the growth will be affected;

4. Frequent water change to dilute the iron ion content in the water: the symptoms of excessive iron are brown or black on the leaf surface and veins due to the precipitation of iron phosphate in the tissues, and there are white leaf spots. In severe cases, the entire aquatic weed tissue will disintegrate. The method of prevention and control is to change the water to dilute the iron content.

After the leaves of aquatic plants turn black, the following points should be paid attention to in the cultivation of buckets:

1. The amount of water exchange should not be too much: when the water is changed, the amount of water is too much, the water quality changes suddenly, and the leaves will turn black;

2. Do not place aquatic plants in a place where the light is too strong: if the light is too strong and the wavelength of the light is not suitable, the leaves will also be blackened;

3. Control the amount of additives: the addition of fertilizer is not suitable, and the factor of adding carbon dioxide will affect the growth;

4. Frequent water change to dilute the iron ion content in water: the symptoms of excessive iron are that the leaf surface and leaf veins are brown or black due to the precipitation of iron phosphate in the tissue, and white leaf spots are produced. When the plum is seriously lost, the whole aquatic weed tissue will collapse or dissolve.

The method of prevention and control is to change the water to dilute the iron content.

When aquatic weeds are infected with a virus and symptoms appear, there is generally no better way to cure them, so the focus is on prevention. The main ways are:

1) Eliminate or reduce the pathogen, so that the fish and bait entering the aquatic plant tank are clean and hygienic.

2) Use bacterial fertilizer products to increase the beneficial bacteria in the soil and eliminate harmful bacteria.

3) Prevent the spread of the disease, and when a diseased plant is found, immediately remove it and replant a healthy new plant.

4) Prevent aquatic weeds from being injured and minimize large pruning to reduce the chance of wound infection.

5) Be diligent in changing the water, so that the virus in the water is diluted by changing the water, as long as it reaches below the critical dilution of pathogenicity, the aquatic weeds will not be infected and rot.