Alberto, I read this whole thread and I was amazed. Although I have a few concerns.. Do you think a pup will tolerate that kind of environment? I noticed the rays that you put in there were at decent size. I would like to know if a pup ( doesn't have to be new born) will be able to survive there. Also by any chance, is it possible if you could check your water parameters in that pond? I would like to know..
Other than that, you are a genius. I'm happy to see someone using the K.I.S.S method. Looking forward to hear from you!