During high temperatures in summer, crab ponds overfeed feeds, and the crabs excrete faeces, which can easily cause pollution. As a result, the sediment quality of crab ponds deteriorates, affecting the growth of crabs and causing severe crab crab deaths. To this end, it is of utmost importance to master the signs of deterioration in the sediment quality of the crab pond so that timely and effective measures can be taken.
I. Signs of deterioration of sediment quality in summer crab ponds
1. There is a yellow foam in the pond, black water in the roots of the aquatic plants, and inconsistent water and water levels in the pool.
2. Increased miscellaneous fish in the pond;
3, in the early morning sunlight, the pool bottom bubbles;
4, the water becomes thick, the wind blowing through the surface with fine water patterns, the surface of the pool appears "bloom";
5. When the downwind has a stench of odor or an aerator, the resulting foam does not spread easily or the foam becomes yellow, black, and smells bad.
Second, the summer crab pond sediment quality deterioration treatment method
In light of the above signs in crab ponds, effective measures should be taken in time to resolve the impact of sediment quality deterioration on crab production.
1. Take water-changing measures in time, discharge part of the pool water, and add new water appropriately;
2, regular use of water conditioners, bottom modifiers, so that the physical and chemical factors in the water within the normal range;
3. The feed to be fed should be mainly pelleted feed, and should be eaten within 3 hours;
4, by adjusting the water level, control the height of aquatic plants growth, promote its stout thick.
5. If there are too many aquatic plants in the pond, take ventilation and cutting measures to ensure that there is sufficient dissolved oxygen in the pond.
The RCU is connecting to the server center by TCP/IP and Ethernet protocol, each RCU could is connected to the hotel LAN and has an independent and unique IP address that is compatible with the Ethernet standard.
On the high voltage, there are replay outputs for the electrical equipment, the relays act as the switch and are controlled by the communication board that could receive the instruction from the 12V switches installed in the guest room.
The communication board is the core as the whole RCU like computer`s CPU, it mainly has two functions as below:
Receiving instruction signals from the switches, door plate, and sending signal to the 220V high voltage to turn on/off the lighting fixtures or control the air-conditione
The function of smart RCU as below:With strong stability;Good compatibility; Enhance the quality of hotel services ;Low cost,easy maintenance.
Smart Hotel RCU,Hotel RCU Show Box,Hotel RCU Guest Room Control System
Shenzhen Zhuohao Intelligent Electronic Development Co., Ltd. , https://www.szactop-smart.com