JBJ Reaction HOB, Hang on Back Filter HB-45

Description

JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45 — Powerful 3-Stage Filtration for 40 Gallon Aquariums

The JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45 is a slim, efficient hang-on-back power filter engineered for freshwater and saltwater aquariums up to 40 gallons. The JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45 delivers complete 3-stage mechanical, chemical, and biological filtration through a dual intake system combining a standard bottom intake with a self-leveling surface skimmer — simultaneously filtering the water column and removing oily surface film, floating particles, and sludge that accumulate in mid-size aquarium systems. The adjustable flow control valve adapts water movement to the needs of any livestock, and the waterfall-style outflow promotes healthy oxygen exchange and CO2 diffusion at the surface. The JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45 hangs compactly on the back of the aquarium with a slim profile that keeps the aquascape unobstructed and the focus on your fish and plants.

Key Features of the JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45

• Designed for aquariums up to 40 gallons — ideal for mid-size community tanks, cichlid tanks, planted tanks, and reef aquariums
• Dual intake design — combines standard bottom intake with self-leveling surface skimmer for superior whole-column and surface filtration
• Self-leveling surface skimmer — removes oily surface film, floating particles, and sludge; improves gas exchange at the water surface
• 3-Stage filtration — mechanical, chemical, and biological filtration in a single compact unit
• Pre-filter sponge on intake — protects shrimp, fry, and small fish from intake suction
• Adjustable flow control valve — customize water movement for any livestock or plant requirements
• Waterfall-style outflow — promotes surface agitation, oxygen exchange, and CO2 diffusion
• Slim profile — hangs compactly behind the aquarium keeping the aquascape in full view
• Quick startup and silent operation — reliable, quiet performance for any room placement
• 1-Year limited warranty — backed by JBJ Aquariums

JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-45 — 3-Stage Filtration System

Stage 1 — Mechanical Filtration

The dual intake draws water from both the water column and the surface simultaneously. Combination fine and coarse sponge filters capture particulate matter, detritus, and suspended solids before they reach the chemical and biological media stages. The coarse pre-filter sponge protects small tank inhabitants while delivering the first stage of mechanical filtration.

Stage 2 — Chemical Filtration

Activated carbon removes dissolved organic compounds, tannins, odors, and discoloration — maintaining water clarity and chemical stability in the mid-size aquarium environment.

Stage 3 — Biological Filtration

Ceramic rings provide extensive surface area for colonization by beneficial nitrifying bacteria — supporting a stable nitrogen cycle across the larger water volume of a 40-gallon system.

Choosing the Right Model — Full JBJ Reaction HOB Hang-On-Back Aquarium Filter Range

The JBJ Reaction HOB Hang-On-Back Aquarium Filter series covers tanks from 5 to 50 gallons. Browse all models at Quinn’s Fins:

• JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-05 — up to 5 gallons — $22.00
• JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-15 — up to 20 gallons — $27.00
• JBJ Reaction HOB Hang-On-Back Aquarium Filter HB-55 — up to 50 gallons — $42.00

Technical Specifications

For setup guidance, visit the JBJ Reaction HB-45 Quick Guide.