I was contemplating about to putting a small trickle and leak out. So let make math simple, 1000gallon pond would need water change 10% per week. So roughly 1% per day. If I can design a leak out at the level where pond would be, whatever I trickle in will not overflow pond. With that say, 1% per day is 10 gallon which is nothing. or is that a good rate?
Plan: 55 gallon barrel with autofill valve so the barrel always full. Gravity drip line leak into the pond at about 1-2gph. Water going into the barrel will be filter by an Amco Hose Carbon filter to take some chlorine/chloramine out.
Is that seem feasible and reasonable?