Red Sea Reedmat

[Repassow]

I freely like the Red Sea plug and play system. How often do you need to change the roll on Reefmat? I knows it depends on load but general idea?

 

[C_AWOL]

Depends entirely on flow into the roller + height in the sump + bioload/feeding habits.
I use 2 on a 470g and for the primary roller I get about 20 days per roll with the secondary lasting about 30 (handles about half of the flow)