There are a lot of opinions regarding how fast you’re moving bed media should be turning. I’ve always been a firm believer in as long as something is moving you have multiple zones of bacteria of different types all growing in the same environment.
Some bacteria is going to work better at a faster churn others the slower one will grow the strongest bacteria of that type. Having multiple environments that are turning over your media at different speeds is going to ensure the best cross-section of available beneficial bacteria for your aquaponics system.
In here I’ve routed some of the active sump return right in next to the pond return. Even at the slow turnover that I use this should be clear in about 2 and 1/2 hours. submitted by /u/PartnersInCrimePhoto
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