So now I believe it is time to stock the BG, RES, LMB. Did some work on the water this weekend to see where it's at. Bought titration kits and a pH meter because that's just the way I am.
There is 0 alkalinity in the pond. It's totally a runoff rain and groundwater runoff pond. I checked the pH .. it runs 6.7-6.9. I tested several spots around the pond. The inflow water was 6.2-6.4 in the mornings and up to 6.8ish in the evening. The main pond water was rather randomly going up and down during the day(no correlation vs morning, afternoon, evening), but with only a 0.2 range, I figured that's likely within instrument error. I measured the water coming out the overflow pipe and it was 6.9-7.2. So I take all that to mean that even with no alkalinity, it isn't varying greatly for now. The water is coming in more acidic, but by the time it exits, it's neutral.
I have never seen a pond with 0 alkalinity. Lower pH suggests low alkalinity. Evidently 0 alkalinity ponds exist. I assume your test is accurate. If you have fish living in it, you can stock other fish. With such low alkalinity don't expect to see green water blooms. Ponds with low alkalinity you should feed pellets to get a prosperous fishery.
