IceCap K3 250 HOB Protein Skimmer
IceCap K3 250 HOB Protein Skimmer
UPC: 6972809521021
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The IceCap K3 250 HOB is designed for reef and fish-only keepers who need reliable nutrient export without dedicating sump space to a skimmer. Hanging directly on the tank wall, it keeps the skimmer accessible and the sump—if present—free for other equipment. The cylindrical body shape is a deliberate engineering choice: curved walls reduce chaotic water movement inside the reaction chamber, allowing the air-water mixture to contact organic material more consistently before it reaches the collection cup.
Powering the unit is IceCap's DCAIR 2.5 pinwheel pump, mounted externally to limit heat introduction into the display. The pump is controllable, meaning you can dial in air and water draw to match your system's actual bioload rather than running the skimmer at a fixed output. At full rated performance, it moves approximately 900 lph of air and 317 gph of water while consuming only 16 watts—reasonable efficiency for a skimmer at this capacity level.
Construction is high-quality acrylic throughout, and the skimmer ships with an 8mm ID / 12mm OD cup drain fitting for passive or plumbed cup drainage. The mounting hardware accommodates tank walls up to 1.5 inches thick, covering most standard and rimless glass and acrylic aquariums in this size class.
Fit and setup are straightforward, but bioload matching matters. IceCap rates the K3 250 HOB at 140 gallons for heavy bioload systems, 200 gallons for medium, and the full 250 gallons for lightly stocked tanks. Buyers running aggressive fish loads or heavy feeding schedules should size accordingly rather than defaulting to the maximum rating. The skimmer carries a one-year limited warranty through CoralVue, effective from the date of purchase.
Overview
Efficient. External. Controllable.
A hang-on-back skimmer built for serious nutrient export without requiring a sump. Here is what sets the K3 250 HOB apart.
External DC Pump
- DCAIR 2.5 pinwheel pump mounted outside the body to reduce heat transfer
- Variable speed control lets you match output to actual bioload
- 16-watt consumption with 900 lph air draw and ~317 gph water draw
Cylindrical Body Design
- Curved reaction chamber walls reduce internal turbulence
- Smoother water flow improves contact time between air bubbles and organic waste
- Compact 5-inch body diameter fits tight spaces alongside other equipment
Hang-On-Back Convenience
- Mounts directly on the tank wall — no sump required
- Supports tank walls up to 1.5 inches thick
- 11 x 5.6-inch footprint and 23.3-inch total height fit most standard setups
Specifications
K3 250 HOB — Physical
- Footprint
- 11 in × 5.6 in
- Body Diameter
- 5 in
- Total Height
- 23.3 in
- Max Mounting Wall Thickness
- 1.5 in
- Cup Drain Size
- 8 mm ID / 12 mm OD
K3 250 HOB — Pump (DCAIR 2.5 Pinwheel)
- Pump Type
- DC pinwheel (externally mounted)
- Power Consumption
- 16 W
- Air Draw
- 900 lph / 31.5 scfh
- Water Draw
- ~317 gph
K3 250 HOB — Bioload Rating (excluding sump)
- Heavy Bioload
- Up to 140 gal
- Medium Bioload
- Up to 200 gal
- Light Bioload
- Up to 250 gal
Warranty
- Coverage Period
- 1 year from date of purchase
- Warranty Holder
- Original purchaser only
- Administered By
- CoralVue, Inc.