I thought the whole thing was correct ,but we already discussed what my opinion was worth,I guess I'm selfish ,I built the pond for my wife and I ,no one would mistaken my attempt at it {NATURAL} ,save the water and the fish and a few materials I used ,water that clean in nature is only present in very fast moving water,or in ideal conditions ,The best pond engineers ,are beavers ,they only build to satisfy thier needs ,the rest is secondary
I think, we need to be that smart ,build what satisfies you ,all the rest of this is options available to that goal ,the only perfect pond is the one you build for yourself ,I 'll take that back there is no truely perfect pond But were all working on it in our own way! mvb Carl