North of fish under ice ice points

Specific considerations are as follows:

Choose winter water. It is better to use new water for wintering waters, such as rivers, lakes, reservoirs, springs, wells, etc., and add a small amount of old water (feeding used water). The old water is rich in phytoplankton and is conducive to photosynthesis and oxygenation.

Kill large-scale zooplankton. Large zooplankton feed on phytoplankton, and it also consumes oxygen during wintering, so measures should be taken to kill it.

Keep clear light transmittance. Keeping clear ice should take the following two measures: one is to prevent snow from blocking bubbles, and the other is to keep clean snow and dust.

Pay attention to nutritional supplements. If it is found that the dissolved oxygen in the water is drastically reduced, it is the lack of fertilizer in the water body, and fertilizer can be chased.

Electrical Fire Monitoring System

Electrical Fire Monitoring System,Electrical Fire Monitoring Detector,Combined Fire Monitoring Detector,Combined Electrical Fire Detector

LIAONING YINGKOU TIANCHENG FIRE PROTECTION EQUIPMENT CO.,LTD , https://www.tcfiretech.com