Flagship, high-capacity in-sump skimmer for large reef systems. Dual Quantum 5.0 pumps, precise air/water controls, and a quiet, low-power design deliver stable, consistent export on serious builds.
Dual-pump system with Hybrid Wheel impellers for ultra-fine bubbles
Clear-View Reactor volutes for easy visual inspection
Independent air & water tuning + micro-adjust water level control
Silicone feet and titanium screws for quiet, long-term reliability
Tool-less cup with twist-lock; fully serviceable body for deep cleans
Manufacturer system range: 250–1,000 gal (1,000–4,000 L)
Third-party guidance (approx.): Heavy 250 gal / Medium 600 gal / Light 1,000 gal
Footprint: 13.4" × 16.4" (34 × 41 cm)
Height: 26" (65 cm)
Pumps: 2 × Nyos Quantum 5.0 (AC)
Air draw (max): ~2 × 2,200 L/h
Power: 2 × 22 W (≈ 44 W @ 120 VAC)
Recommended sump water level: ~8–10"
Quantum 300 skimmer body & collection cup
2 × Quantum 5.0 pumps (Hybrid Wheel)
Standpipe with silencer
Place in a stable 8–10" deep skimmer chamber; allow a short break-in.
Start with air fully open, then raise the internal water level slowly to set a dry–medium skimmate; fine-tune air as needed.