Been 'away' back at the farm and just tested the pond.

pH spot on at 7.0
[Linked Image from i.ibb.co]

Alkalinity I think is low at 21ppm.

Question - What is the "Desired" alkalinity ppm? I have powered gypsum to raise it and add calcium.

From - [url=https://wkrec.ca.uky.edu/files/alkhardness.pdf][/url]

Most aquatic organisms can live in a broad range of alkalinity concentrations. The desired total alkalinity level for most aquaculture species lies between 50-150 mg/L CaCO3 , but no less than 20 mg/L.

Last edited by Stressless; 10/31/22 11:12 AM.
8 Ponds in Mid-East Ohio, three streams that merge to 1.

Fishbowl Pond - 1.5 acre, family swimming hole, 22'
Figure 8 Pond - 1.25 acre, 12'
Crescent Pond - 2 acre 11'