Red Sea MAX NANO Circulation Pump — 950 lph Sicce Replacement Pump, REEF-SPEC

The MAX NANO circulation pump from Red Sea is the 950 lph (251 gph) Sicce pump that moves water through the aquarium's rear sump.

The question that brings people here is almost always the same: which pump goes in my MAX NANO? According to the specifications published by Red Sea, the MAX NANO Cube and the MAX NANO Peninsula each use one hidden circulation pump rated at 950 lph (251 gph). That is the pump on this page — part code R40589.

What the pump does inside the MAX NANO

Red Sea describes MAX NANO circulation as a REEF-SPEC loop: water is drawn from the surface, passes through the micron bag, the skimmer, the chemical filtration compartment and the bubble trap, and the circulation pump then returns it to the display through an adjustable multi-directional nozzle. Red Sea also states that MAX NANO pumps turn over the aquarium's entire water volume roughly ten times per hour. So a pump losing performance slows the whole MAX NANO filtration loop, not just the flow you can see.

⚠ Check your model before ordering

The four MAX NANO tanks do not share a pump. The specification table published by Red Sea reads: MAX NANO Cube 1 × 950 lph (251 gph) · MAX NANO Peninsula 1 × 950 lph (251 gph) · MAX NANO XL 1 × 1,550 lph (409 gph) · MAX NANO XXL 2 × 1,550 lph (409 gph). This part is the 950 lph pump, so it matches the Cube and the Peninsula. If you own an XL or an XXL, write to us before ordering and we will confirm it with you.

What Red Sea does not publish

Red Sea publishes no wattage for the MAX NANO circulation pump, no dimensions, no cable length and no warranty term on the part. If you find one of those numbers elsewhere, it does not come from the manufacturer, and we will not invent one. Write to us with your tank model and year and we will look at it with you.

Frequently asked questions

Which pump goes in the Red Sea MAX NANO?

A 950 lph (251 gph) Sicce circulation pump for the MAX NANO Cube and the MAX NANO Peninsula, per the specifications published by Red Sea.

What is the flow rate of the MAX NANO pump?

950 lph, or 251 US gallons per hour. Red Sea states the pump turns over the tank's full water volume roughly ten times an hour.

Does this pump fit the MAX NANO XL or XXL?

No. Red Sea fits the MAX NANO XXL with two 1,550 lph (409 gph) pumps and the XL with a single 1,550 lph pump. This part is the 950 lph version.

Is this the same pump as the Desktop 950?

They are two separate parts from two separate ranges, even though both are rated 950 lph. For a DESKTOP aquarium, order the Desktop 950 circulation pump instead.

Why buy from ReefSolution

ReefSolution is an authorized Red Sea dealer based in Laval, Quebec, and we stock spare parts on the shelf — not just new tanks. A failed pump on a 75 L nano cannot wait three weeks. If you are setting up or rebuilding a MAX NANO Peninsula G2, it is a good moment to change your Red Sea felt filter bag as well. Shipping across Canada, and our team is in the store if you are unsure which model you have.