Hagen 33194 First Impressions

This is not.

The bacteria eats the nitrates in the water to help keep it clean. Lift the sticking wheel outuse a Q-tip to clean the slots where the wheel rests. As for performance, I couldn't ask for a better filter. Firstly, I'd recommend taking the motor apart and putting it back together. Fill it up with water before you plug it in. This one is working perfectly good FOR RIGHT NOW. I will never buy any other HOB no matter what deal they might be offering.

  • Editor's Impressions Of The Hagen 33194
  • Filter Effectiveness
  • Build Quality
  • Value For Money
  • Feature Set

Hagen 33194 Final Thoughts


I also don't like how short the intake tube is. It's easy to clean and we all know about easy. Not sure what I'll do with the more complex design. It doesn't rise up hugely above the tank like a lot of HOB filters. I also don't like how short the intake tube is. You'll want to pull that water from the bottom. I had a lot of particles in the water.

Overall Score

(109 Points)
  • Hagen 33194 Features & Specs
  • 15 Count Bio Clear Cartridges for Slim Filters
  • Best for goldfish and ideal for start-up fish tanks
  • Zeolite effectively adsorbs toxic ammonia and reduces stress on fish
  • Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration
  • Genuine replacement filter cartridges for all 3 Marina Slim Aquarium Filter Models (S10, S15, S20)
  • Manufacture: Monster Pets
  • Product Dimensions: 5 x 2 x 10 inches; 12 Ounces

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