ewest: The only groundwater that made it into the pond is from my well when I filled it.

Bill: I used 2 different tests in that pond because I didn't believe the #'s And also tested another puddle. The test was accurate.

do you think it was from the cottonseed meal? Was 5 lbs. too much for 60,000 gallons? being a new pond there probably isn't a big enough Nitrosomonas colony to convert the ammonia but why is there ammonia and the pond removed all 40ppm Nitrate.

maybe the initial bloom removed the Nitrate and as the cottonseed meal is decomposing and the bloom gets stronger it can't keep up with the ammonia?? At this point im just thinking out loud
Travis