Parts for Aquatop CF-300 / CF-400
Printed PETG parts cut to the hose size listed for it: 5/8 inch vinyl. Made to order in the USA.
These parts are cut to the hose size listed for the CF-300 / CF-400.
About the Aquatop CF-300 / CF-400
This page covers the CF-300, and the CF-400.
Aquatop states 5/8 inch inside diameter for the CF-300 and CF-400. It gives the inside size only. Our 5/8 inch vinyl barb fits that inside size.
Model numbers change over the years, so check the label on your filter to be sure which one you have.
- Hose
- 5/8 inch vinyl
Hose sizes for this gear
- 5/8 inch clear vinyl tubing15.88mm inside, 22.23mm outside
Where to start
These are the parts we make the most of in this hose size. It is a count of what we make, not a sales ranking.
Connect hoses
7 parts.

Eheim 12/16mm to 5/8 Inch Vinyl Barb Adapter
12/16mm hose to 5/8 inch vinyl

Eheim 16/22mm to 5/8 Inch Vinyl Barb Adapter
16/22mm hose to 5/8 inch vinyl

Eheim 16/22mm to 5/8 Inch Vinyl Barb Adapter, 45 Degree
16/22mm hose to 5/8 inch vinyl, 45 degree

Eheim 16/22mm to 5/8 Inch Vinyl Barb Adapter with Clamp Groove
16/22mm hose to 5/8 inch vinyl, clamp groove

Eheim 12/16mm to 5/8 Inch Vinyl Barb Adapter with Clamp Groove
12/16mm hose to 5/8 inch vinyl, clamp groove

Eheim 16/22mm to 5/8 Inch Vinyl Barb Elbow Adapter, 90 Degree (Two-Piece)
A two piece, 90 degree elbow adapter for tight spots.

Eheim 12/16mm to 5/8 Inch Vinyl Barb Elbow Adapter, 90 Degree (Two-Piece)
A two piece, 90 degree elbow adapter for tight spots.
Guides for this filter
These pages cover this filter by name, or the hose sizes it uses.
- Which Hose Fits Your Filter: Eheim, Fluval, and JBL Hose Sizes by ModelEheim, Fluval, and JBL all size their hose differently. Find your model, read its size, and see the adapter that bridges the gap.
- Shrimp Guard Compatibility Chart: Filter Models, Intake Sizes, and 1.5 mm GuardsFind your filter model, read its intake size, and see which shrimp guard it takes. Sourced from each maker's own hose specs.
Other Aquatop gear
Run more than one of these? Each page shows the parts we print for that model.
Not sure which one you need?
The Fit Finder walks you through your hose size step by step. The Custom Builder lets you set the size yourself.
Browse by size
Need something for the CF-300 / CF-400 that is not here? Tell us what you run and we will add it to the list we build from.
Brand names on this page belong to their own companies. We use them only to show which gear these parts are made for. TankRig is not part of those companies, and they do not back or approve our parts.
