With my predators I go from 10ppm after a massive water change (i do 80-90% changes) to 80 the next day. To the sky from there. Over 200 48-72 hours.
Drip systems were my solution. Not sure if you're at that stage yet. But they have greatly decreased my maintenance and helped water quality stability. This is useful because my girlfriend has to take care of the fish while i travel for work. Huge relief not having water changes done in my absence.
I have found that sometimes "socially" I can get my stock levels high. But biologically I'm limited. This helps with that. I can stock to the density the fish can socially tolerate instead of being limited by biological waste load.