Roller filter

[serhat]

Hi everyone,





I’m having an issue after installing a roller filter and I’m trying to understand if others have experienced the same problem.





My main drain (Durso-style overflow) was previously very stable and silent. After connecting the drain directly into the roller filter, I started noticing the following behavior:

• When the roller mat advances automatically,
  the water level in the overflow suddenly drops
• This causes the Durso to suck air and make noise
• When the mat gets dirty, the water level rises again
• So the overflow water level is constantly fluctuating depending on the roller resistance

Basically, the roller mat changing resistance (dirty → clean) seems to directly affect my overflow water level and noise.





When I remove the roller filter from the drain line, the system becomes stable and silent again.





Has anyone else experienced:

• Roller filters causing overflow / Durso water level instability?
• Sudden noise when the mat advances?
• A need to add a bypass, separate feed pump, or partial flow split to solve this?

I’m currently testing the system without the roller filter for a few days to confirm, but I’d really appreciate hearing how others solved this:

• Independent feed pump?
• Partial T-split from the drain?
• Complete removal of the roller?

Thanks in advance for any insight

 

[exnisstech]

Do you have an ATO? Rollers can cause what your describing because they gradually fill up then dump water back into the sump when they advance. Not sure what roller you have but my reefmat allows me to set the amount that it advances. I keep mine set to 1.0" - 1.2"

 

[Freenow54]

I am just following