Reef Octopus Classic 1000 HOB Protein Skimmer for Marine Aquariums up to 130 Gallons

Bring professional grade protein skimming to your aquarium without the need for a sump. The Reef Octopus Classic 1000 HOB Protein Skimmer is engineered for reef keepers and saltwater hobbyists who want exceptional nutrient export while maintaining a clean, simple setup.

Designed to hang directly on the back of your aquarium, the Classic 1000 HOB features an externally mounted Aquatrance 1000S pinwheel pump, maximizing performance while minimizing heat transfer into your aquarium water. Its slim profile, premium acrylic construction, quiet operation, and efficient foam production make it an excellent choice for both reef and fish-only marine systems.

Whether you're battling nuisance algae, improving water clarity, or creating a healthier environment for sensitive corals, the Classic 1000 HOB is built to perform.

Key Features

• Designed for marine aquariums up to 130 gallons
• No sump required and easy hang on back installation
• Powerful Aquatrance 1000S Pinwheel Pump
• External pump design reduces heat transfer
• Compact footprint ideal for limited space
• Quiet operation with included air silencer
• Premium cast acrylic construction
• Built-in surface skimmer attachment
• Easy-access pump for routine maintenance
• Excellent for reef aquariums and fish only saltwater systems 

Technical Specifications

Recommended Aquarium Size

• Light Bioload: Up to 130 gallons
• Medium Bioload: Up to 80 gallons
• Heavy Bioload: Up to 60 gallons

Dimensions

• Footprint: 8.8" × 3.5"
• Height: 17"

Pump

• Aquatrance 1000S Pinwheel Pump
• Power Consumption: 9 Watts
• Air Draw: 420 LPH
• Water Flow: 350 LPH (92 GPH)

Installation

• Hang On Back (HOB)
• No sump required

Why You'll Love It

Unlike many HOB skimmers that require bulky internal pumps, the Classic 1000 HOB places the pump externally, giving you:

• More room inside the aquarium
• Less heat added to your water
• Easier pump removal for cleaning
• Excellent air-to-water mixing for dense foam production

The result is consistent skimming that helps remove dissolved organic waste before it breaks down into nitrate and phosphate.

Why Does Your Aquarium Need a Protein Skimmer?

A protein skimmer is one of the most effective pieces of filtration equipment available for saltwater aquariums.

What does it remove?

Protein skimmers remove dissolved organic compounds before they decompose into:

• Ammonia
• Nitrite
• Nitrate
• Phosphate

By exporting waste early, your aquarium stays cleaner and more stable.

Benefits of Protein Skimming

Improves water clarity

Helps reduce nuisance algae

Lowers nutrient buildup

Increases oxygen exchange

Supports healthier fish

Promotes coral growth and coloration

Reduces maintenance between water changes

For reef aquariums, a quality skimmer is often considered one of the most important filtration upgrades you can make.

Is This Skimmer Right for Your Aquarium?

The Classic 1000 HOB is ideal if you have:

• Reef aquariums
• Fish-only marine aquariums
• Mixed reefs
• Soft coral systems
• LPS reefs
• SPS systems with proper sizing
• Aquariums without a sump
• Existing HOB filtration setups

What's Included

• Reef Octopus Classic 1000 HOB Protein Skimmer
• Aquatrance 1000S Pinwheel Pump
• Intake Strainer
• Installation Hardware
• Setup Guide

Break-In Period

Like virtually all new protein skimmers, the Classic 1000 HOB requires a short break-in period.

During the first few days you may notice:

• Increased microbubbles
• Inconsistent foam production
• Wet skimming

This is completely normal. Once the acrylic surfaces develop a natural biofilm, performance stabilizes and skimming becomes much more consistent.

Why Buy From Infinity and Beyond Aquatics?

When you shop with us, you're supporting a fellow aquarium hobbyist who understands what it takes to build and maintain a thriving aquatic ecosystem.

We provide:

• Authorized dealer products
• Competitive everyday pricing
• Careful packaging
• Responsive customer support
• Expert guidance before and after your purchase
• Passionate service from hobbyists who genuinely love the aquarium community

Whether you're building your first reef or upgrading an established system, we're here to help every step of the way.