How to manage the ocean in summer and what are the key points of management in high temperature period?

This summer, the high temperature period broke the record in 40 years, and the average temperature was 65438 0.3℃ higher. Since the dog days, there have been some phenomena in the sea cucumber circle, such as hypoxia, fever, sea cucumber climbing off the reef, and small fish and shellfish eating to death. Serious peeling and floating of sea cucumber have suffered losses to varying degrees. It is reported that some areas with poor water exchange conditions have exceeded 20 13 of summer sea cucumber diseases in Dongying, Shandong Province. Detection: the dissolved oxygen at the bottom of the diseased circle is less than 4 mg/L, the bottom water temperature is greater than or equal to the upper water temperature, and ammonia nitrogen is intermittent.

Suggestion: In rainy weather and hot and humid weather, the effects of low dissolved oxygen, high hydrogen sulfide and ammonia can be effectively and continuously alleviated by using "total effect bottom modification" and "atomic oxygen". "Dr. Water" mediates the water quality, relieves the toxicity of toxic substances in the water to sea cucumbers, opens the permeability of the water body, and fully dissolves dissolved oxygen in the water body. Sea cucumber safely passes through the summer dormancy period, and the improvement of substrate and the management of increasing dissolved oxygen are the key points! The stealing death of sea cucumber in summer sleep directly affects the autumn yield and beach quantity. Poor sediments also create conditions for the reproduction and survival of ciliates. The parasitism of ciliates leads to the physical decline of sea cucumber, and the common vomiting and peeling problems in autumn will appear. The management of sea cucumber circle in summer is a particularly important stage in the whole culture cycle. The state of sea cucumber sleeping in the reef in summer is not easy to be found, but once it gets sick, the loss is very serious. Small problems accumulate big problems, and big problems cause diseases!

Key points of management in high temperature period:

1. The water level should be controlled around 1.5m when sleeping in summer. Deep water level can inhibit the growth of aquatic plants, help stabilize the salinity difference after heavy rain, and reduce the probability of bottom heating and bottom hypoxia.

2. Change the water under the premise of ensuring the relative stability of the external tidal water quality, and drain the bottom water as much as possible during the high temperature period to make the pool water move and change the state of the stagnant water and the old water. In summer, the water quality of algae is unstable and changes greatly, and the external tide is prone to red tide. Changing water is one of the best ways to adjust water quality.

3. Measure the bottom water temperature regularly. In general, the bottom water temperature is lower than the surface water temperature. Bacteria accumulated in the bottom heating substrate ferment under anaerobic conditions to generate heat, and a large number of harmful gases at the bottom are released. The strongly stimulated sea cucumber climbed out of the reef and drifted. Too much dead grass will cause the bottom to be black, smelly and hot. Fishing out the dead grass or stirring up some thick dead grass will help the bottom decoration products to act directly on the bottom.

Summarize the key points of sea cucumber management in summer: starting with improving the bottom material, increasing dissolved oxygen and improving the physique of sea cucumber are the keys to our successful aquaculture.