2. Fill water with oxygen. During winter, when there is a lack of water or oxygen in fishponds, water can be diverted directly into the pond. If the oxygen content in the water source is low, the water flow can be subjected to a certain process and drop, and the oxygen content can be increased and then injected into the pond to improve the effect of supplemental oxygen. It should also be noted that excess iron-containing water must be subjected to a certain amount of time of storm gas, oxidation and precipitation before it can be injected into the pond in small quantities. Take water injection and oxygen supplement measures, we must pay attention to early implementation to prevent the lack of oxygen due to a water injection too much or water injection time is too long, leading to rapid changes in pond water temperature and fish swimming. Each time the water injection and the amount of water injection should be based on specific circumstances. To minimize the water injection time, the depth of ice water is generally about 2 meters.
3. Inflation oxygen. Use a windmill or other power to drive the air pump to press the air into the hose set under the ice water, attach a filter on the top of the hose, or directly pierce the holes in the hose to let the air diffuse into the water with very small bubbles. Increase air-water contact area and increase dissolved oxygen in water.
4. Chemical oxygenation. For small water bodies such as wintering in greenhouses and overwintering in aquariums, in the event of hypoxia, chemicals may be added for oxygenation and first aid. Currently used chemical oxygenation agents are: ammonium peroxodisulfate, calcium peroxide and hydrogen peroxide. The amount of ammonium peroxodisulfate used was 10 grams per cubic meter of water, and the amount of calcium peroxide and hydrogen peroxide was 10-20 ml per cubic meter of water. The amount should not be too much, so as to avoid damage to the fish.
Glass Venlo Greenhouse is Spire-type glass design, design and installation of windows when more convenient and easy. Its roof slope andle can be appropriately according to the local real climate change the environment.
In Venlo greenhouse, foundation is made of reinforced concrete and the side wall is made of brick or reinforced concrete plate. the steel frame always use hot dip galvanized light steel. Roof beam adopts horizontal girder structure and using herringbone connection. The horizontal girder bears 2 or more roofs, which is made of aluminum alloy. This material is used as roof structure material and also glass inlay material. Other beams using gutter style to minimize the section. Delighting material of the roof and side wall using 4 mm thick float glass.
Glass Venlo Greenhouse,Flowers Glass Greenhouse,Nursery Glass Greenhouse,Vegetables Glass Greenhouse
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.greenhousehydroponic.com