How to judge whether hydroponics is rotten

1. Gently pull the rhizosphere with your hand

Huahua usually looks at whether the root turns black and yellow, and then touches it with his hand to see if it becomes soft. If you gently pull the rhizosphere and find that the epidermis is easy to fall off, it means that the root has rotted

2. Smell with your nose

Smelling with the nose is mainly to smell the plant roots and water. If there is some odor, it means that the roots have rotted

Reasons for rotten roots

1. Low dissolved oxygen content in nutrient solution

There are many reasons for root rot of hydroponic plants, and the most common reason is the problem of nutrient solution. For example, in the past summer, when the weather is hot, the dissolved oxygen content in the hot water culture bottle will become lower, which may cause hypoxia in plant roots

Solution: put the hydroponic bottle in a ventilated place at home

2. Poor quality of nutrient solution

If there are substances in the nutrient solution, it may be because there are residual plant fragments and residual matrix in the water quality, which will also lead to the deterioration of the nutrient solution

Solution: change the water once every 2 to 3 days and check the quality of nutrient solution

3. The nutrient solution flooded the plant roots

If the nutrient solution submerges all the roots and even rhizomes of the plant, the roots will rot

Solution: expose half of the plant roots to oxygen and half to nutrient solution

4. High nutrient solution temperature

When the temperature of nutrient solution exceeds 30 ℃, the root system is easy to rot

Solution: shade the plants properly

How to deal with rotten roots

1. Cut off the rotten roots in time

After finding rotten roots, take out the plants and wash the root mucus with clean water. Don't rub it with your hands. Then cut off the rotten roots and dry them in a ventilated place

2. Water supply bottle replacement

We should wash the hydroponic bottles and replace them with new water. If you use tap water at home, you should supply water and ventilate one day in advance to remove chlorine. When new roots grow, use nutrient solution (or not)

Precautions

1. Temperature

The water temperature of hydroponic culture should be below 18 degrees to 25 degrees as far as possible. Flower friends should pay attention to putting plants in a cool and ventilated place

2. Oxygen

There should be enough oxygen in the nutrient solution. Metronidazole, vitamin B12 and small charcoal can be properly put in the water to prevent corrosion, so as to improve the water quality of the nutrient solution