Octo Cup


Say NO to socks and Tupperware® in your tank!



Filter socks are so last year… these filter cups are all the rage!  The Octo Cup™ is designed to work with most popular sump configurations and is made of clear, 1/8″ acrylic.  All cups are priced individually.

Available for:

Standard 4″ – Tube is 3” diameter and approx. 6” tall.

Waterbox 2.75” – Introducing the world’s FIRST filter cup for small Waterbox tanks!!  This will fit the Marine, AIO and Cube models.  The tube itself is 2.25″ O.D. and approx. 6″ tall.

Red Sea – Tube is 3” diameter and approx. 6” tall.

Eshopps – Introducing the world’s FIRST filter cup for Eshopps sumps that use rectangular filter socks!  My Eshopps cups will fit in the (approx.) 4″ x 6.5″ spaces in your Eshopps sump.  5” tall.

My products are made to order, custom! Please allow up to 10 business days for fabrication time for most products. Because my products are made to order, fulfillment time can rarely take longer. Full custom orders can take up to four weeks to complete. Please let me know ahead of time if this may be an issue. Shipping prices listed are to the contiguous U.S. Please contact me if you live elsewhere and want a shipping quote. Because my products are handmade and/or hand assembled, there may be small irregularities which will not effect the performance of your product.

Additional information


Waterbox 2.75”, Standard 4”, Red Sea, Eshopps (Priced ea)


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