willb e stable. if nitrate is
Just to clarify, when nitrate is increasing from the nitrogen cycle, alkalinity is depleted and that lowers pH. If nitrate is stable, alkalintiya nd pH relted to it willb e stable. if nitrate is declining (beign consumed) alkalintiy is added and pH is boosted.
When organics are being degraded to CO2, CO2 is being produced, lowering pH. Thus, I consider that a CO2 problem, not necessarily an organic problem, but perhaps that's a semantic difference.