First, the beetles: There are many species, often nesting in the mud in the water, nestling in the nest during the day, and at night or at dusk, they come out to feed and feed on large numbers of fry. Prevention and control: Dissolve 0.5 g of 90% crystal trichlorfon per cubic meter of water and then spill it on the water. Second, the water axe: flat slender, body length 35-45 mm, brown body. They use their muzzle to pierce the fish to suck blood and cause the fry to die. Prevention and control: Dissolve 0.5 g of 90% crystal trichlorfon per cubic meter of water and then spill it on the water. Third, leeches: generally attached to the bottom of the pool of stones, water plants, roots or other objects, in its highly prolific breeding fish fry, a greater harm. Prevention and treatment: remove aquatic plants, roots, stones, and other debris from the pool water. Do not allow leeches to have habitats so that they cannot survive; if they do, Quanchiposa 90% crystal dipterex solution with the same dose as above. Fourth, water fleas: is the dragon larvae, from May to June when a large number of breeding, a leeches can eat more than 10 fish at night, great harm. Prevention: Build a square or triangular frame with bamboo, place a small amount of kerosene on the frame, and light the lamp or lamp when it is dark. The water leech will come to light and suffocate after contact with kerosene. 5. Algae: A large amount of nutrients in the consumption pool will make the water thinner and affect the normal reproduction of plankton. When a large number of breeding, severely affect the fry activity, fry are often tangled to death. Prevention: (1) frequently change the water. Every 1 to 2 years should change the water in the clear pond 1 times, pay attention to choose a good source of water. (2) In the daily feeding of feed, try to feed the pellet feed with higher utilization rate, and avoid feeding the powdered feed to pollute the water body. (3) When there is a large amount of algae in the water body, it can be salvaged with a sieve. It is best not to use chemicals.
Imported French lens
Mould Die-casting Eight edge type Revolving arm
Each LED can be replaced individually, which guarantees maximum economy.
Configuring lightweight balance arm suspension system ,six groups universal joint linkage ,mobile, lightweight positioning and stablibity .A 360°all-round design ,can meet the need for surgery in different heights and angles.
Color temperature constant, soft, very close to the natural sun light.
The use of liquid crystal display button control, to meet the needs of the medical staff of different patients with the brightness of the operation.
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Prevention of fish seedlings' predators
In the fry cultivation, some aquatic animals and algae are often harmed, and the survival rate of seedlings is seriously affected, resulting in heavy losses.