4. The safety distance between the pond aeration and the water side
should be at least 2m, and the pond aeration must be at least 30cm above
the liquid surface to prevent backward flow and etching and keep the pond
aeration dry both inside and outside.
5. When placed outdoors, the pond aeration must be prevented from
rainfall or solarization. Meanwhile, the pond aeration should be kept dry
both inside and outside.
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