Trigger emerald 20 sump filter sock replacements?

[Tjk]

What filter socks will fit the trigger emerald 20 Sump? Just any 4” filter sock? They seem a little oval to me. This is my first sump so just wanted to be sure. Thanks!

 

[Hersheyb]

Prob easier if u go with filter cups

 

[DARTHROB]

I can confirm that these fit the 20 sump fine:

Felt Filter Sock with Plastic Ring

Replacement filter socks for the Innovative Marine SR series of tanks. Filter socks are a great way to polish the water and export nutrients at the same time. For best results we recommend changing out filter socks ever few days to keep the detritus from breaking down and turning into...

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