Sicce Syncra Silent 4.0 Pump (951 GPH) fit check
Sicce Syncra Silent 4.0 Pump (951 GPH) is an AC return pump rated 951 GPH at zero head with 10.5 ft maximum head, drawing 65W. If plumbing cuts flow roughly in half, it delivers about 476 GPH, a 5-10x turnover for roughly 50-95 gallon systems.
Sicce Syncra Silent 4.0 Pump (951 GPH): fits roughly 55-120 gallon systems. Specs, compatibility math, sizing risks, and alternatives before you buy.
Who it is for
Good fit for
- ✓ 55-120 gallon systems, per the catalog fit range.
- ✓ Roughly 50-95 gallon systems at 5-10x turnover after typical head loss.
Not a fit for
- ✕ Tanks under about 55 gallons; it is sized above them.
- ✕ Systems over about 120 gallons without adding capacity elsewhere.
- ✕ Plumbing runs approaching 10.5 ft of head, where flow drops toward zero.
Listed features
- submersible only
- ceramic shaft
- 5-year warranty
Compatibility math
Head-loss margin
Example: A 95g system usually wants about 950-1,900 rated GPH if plumbing cuts flow roughly in half.
Return pumps are judged by delivered flow, not only the zero-head box rating.
Risk notes
- Box-rating GPH is measured at zero head. Real stands, elbows, valves, and plumbing cut that number down.
Professional fit context
- Check flow chart, head pressure, controllability, plumbing size, and quiet-mode range.
- Sicce Syncra Silent 4.0 Pump (951 GPH) fits roughly 55-120 gallon systems; confirm that range against the final display volume, sump volume, and livestock plan.
Alternatives to compare
- Sicce Syncra SDC 9.0 WiFi Controllable Pump (1000-2500 GPH)
1,000 GPH vs 951: more flow.
- Reef Octopus VarioS-4 Controllable DC Pump (1050 GPH)
1,050 GPH vs 951: more flow.
- Sicce Syncra SDC 7.0 WiFi Controllable Pump (800-1900 GPH)
800 GPH vs 951: less flow for smaller systems.
Full spec snapshot
- Category
- Return Pumps
- Build tier
- Budget
- Estimated price
- $179
- Tank fit range
- fits roughly 55-120 gallon systems
- Format
- AC Return Pump
- Maximum flow
- 951 GPH
Related reading
Questions
How much flow does the Sicce Syncra Silent 4.0 Pump (951 GPH) deliver after head loss?
It is rated 951 GPH at zero head and stops near 10.5 ft. With roughly half lost to plumbing, plan on about 476 GPH delivered, which ReefCrafter treats as enough for 50-95 gallon systems (a 95-gallon system wants 475-950 GPH delivered).
What tank size is the Sicce Syncra Silent 4.0 Pump (951 GPH) for?
ReefCrafter's catalog fit range for it is 55-120 gallon systems. Confirm that against your final display volume, sump volume, and livestock plan rather than the box label alone.
What should I compare the Sicce Syncra Silent 4.0 Pump (951 GPH) against?
Sicce Syncra SDC 9.0 WiFi Controllable Pump (1000-2500 GPH) (1,000 GPH vs 951: more flow); Reef Octopus VarioS-4 Controllable DC Pump (1050 GPH) (1,050 GPH vs 951: more flow); Sicce Syncra SDC 7.0 WiFi Controllable Pump (800-1900 GPH) (800 GPH vs 951: less flow for smaller systems).
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