What are the Feng Shui precautions for courtyard fish ponds?

The fish pond should not be facing the gate. It can be placed in the front yard but not in the backyard. It must be waterproof and well filtered. You cannot build a small pond and make the whole yard smelly, then it will become the entire yard. It was a failure. Kali net has good filtration, and you can use sky blue fish pond environmentally friendly paint for waterproofing.