Yes there is nothing wrong with that. That way it can be reused in the pool if required or for the garden etc. That is assuming it is not a salt water pool.
As long as there are no living Koi in your pond, using the water on your lawn is the best way since the nutrient rich water will help your lawn. Otherwise, letting drain in the sewer drain on your street is ok.
You can but I wouldn't. I have one in my neighbors backyard which they let me fish in. All the pesticides and manure they out on their lawn eventually goes into the retention pond. And some of them have chemicals in them that make them a certain color, like a deep blue. You should just fish their for fun. Why take a chance, right.
Water has a retention rate, if the insect it lighter than what it would take to break the retention then it would be able to float on the surface without being submerged.
no
When the pond reaches a certain level, water gushes out of the drain pipe.
You can't unless the water lily is in a pond and has the right requirements and environment.
if it is a cosmetic pond put your fish in an aquarium and drain your pump so it doesn't freeze and break drain your pond
That's actually a good sign! Because you want water in your pond right? So just keep digging in till its the size you want then just fill it with more water.
Pond water is not a pure substance.
Solution of Pond Water= Oxygen + Water
Physical, but the pond does not chemically change - you still have water and pond goo, only the water has evaporated.
The pond itself.