Hello. I was thinking about making the water situation better for my ducks. They have a pool (kids baby kind). I change the water when its brown and dirty. alot of work. sort of. I have to tip it and fill it up again. using a hose. i wondered if i left i didnt change the water, is that safe. I was thinking this, because if i had an actual pond, the ducks would be in that right? people dont usually drain their ponds. so i was thinking on getting a slightly bigger pool, digging up the dirt, inserting the pool. that way the ducks can just sort of glide into their pool. i hope what i am saying is making sense. Could i leave the pool water and just add more water, when it gets low? Without having to tip it over etc.?