I am using a 2026 pretty loaded up with media on my 60-P with in-line Hydor heater and UpAqua atomizer.
When the filter is clean and I use the open-ended outflow, I have to throttle back the filter to ~ 1/3, otherwise, plants start to uproot. When I switch to 13mm Lilly pipes I have to crank the filter back to max to get any kind of surface movement.
Given that, I'd switch to a different outflow to check if that makes a substantial difference.
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