I just set up 2 ponds in my yard. A smaller that cascades into the bigger
( no idea what size they are, both were given to me). I'm using one pump to
move the water from the bigger tank to the smaller for the cascade. Before
it reaches the upper pond, it passes though a UV sterilizerthen trickles
into the upper one. My question is what do I do next. is there anything I
need to add anything to the tank, how soon can I add fish. And what do I do
about filtration?
Thanks for your help.