Which one for my 26g bowfront?


Standard and Slimline Prefilters

Single Prefilter Box
$119.00 Order
(Click photo for larger view) Flow rate up to 600 gph (1200 gph for Double Prefilter Box)
Available in Standard and Slim-Line
(Standard & Slimline flow rates identical)
Outer box measures 6 1/2" wide x 11" tall
Inner box measures 8" wide x 8" tall x 3"
Standard Box tank-to-wall clearance needed is 4"
Slimline Box tank-to-wall clearance needed is 3"
1" male threaded output with connector supplied
Optional vac-type hose connector can be supplied
(Standard & Slimline flow rates are identical) Standard and Slimline Features:
AUTO-RESTART when power resumes, always 100%.
No aqua-lifter pump or other device needed!
All edges rounded so you or your fish won't harm themselves on sharp edges.
Large 1 1/8" diameter siphon tube, Double Prefilters have two siphon tubes.
1 1/2" of up/down adjustment of inner box.
Inner box cannot be knocked out of vertical alignment.
Long lasting and easily cleaned foam filter element.
Will not overflow, even if foam element becomes dirty.
1" male thread output and included 1" hose-barb fitting, Double Prefilters have two 1" outputs
Fits aquarium rims up to 1 1/2" wide and can also be made to fit acrylic aquarium rims or "Euro" style rims.
Colors available: clear, black, and blue (inner box only)
Available for Red Sea Max 130 aquariums too!
NOTE: The RSM Nano will only work on the
RSM 250 if the protein skimmer is removed.
If you wish to continue the use of the RSM protein skimmer we are working on another design which
should be available by March.

Nano-Prefilter

Nano Shown next to standard prefilter for
size comparison.
$119.00 Order Nano-Prefilter
Perfect for small reef or fish aquariums that don't require high flow rates.
Flow rate up to 400 gph (and anything in-between 0 and 400 gph) In other words it will flow whatever gph you give it.
Outer box: 4 1/2" x 3" x 9" high
Inner box: 4 x 2 1/2 x 6
Output connection 3/4"


Nano Features:
AUTO-RESTART when power resumes, always 100%.
No aqua-lifter pump or other device needed!
All edges radiused and chamfered so you or your fish won't harm themselves on sharp edges.
7/8" diameter siphon tube.
1 1/2" of up/down adjustment of inner box.
Inner box cannot be knocked out of vertical alignment.
Long lasting and easily cleaned foam filter element.
Will not overflow, even if foam element becomes dirty.
3/4" male thread output, hosebarb and clamps included
Fits aquarium rims up to 1 1/2" wide and can also be made to fit acrylic aquarium rims or "Euro" style rims.
Colors available: clear, black, and blue (inner box only)