I mean, it is a if there is a "Chemocline" to your water? I am always hoping someone on this forum whose discipline is more closely aligned to your issue(s) chimes in smile

I would wager good whiskey your issue is CO2 related but not really, really good whiskey. More like off branded 5 star...

If you ever do consider furthertesting, Alkalinity, CH and GH would be the parameters to test.

Last edited by Joey Quarry; 09/24/19 04:42 PM. Reason: clarification

2.5 acres, 87' Deep, Previously a Quarry