Top 5 Aquarium Filters for Medium and Large Tanks

Blessings Aquarium
Jun 18
2 min read

If you own a medium to large-sized aquarium, maintaining water clarity and fish health becomes more challenging. A powerful and efficient filter is the heart of a healthy tank. At Blessings Aquarium, Pune, we help customers choose the best aquarium filters based on their tank size, setup, and fish load.

In this blog, we’ll break down the top 5 aquarium filters ideal for tanks above 2 feet in size—perfect for 3ft, 4ft, 5ft, and even monster tanks!

Why You Need a Powerful Filter for Bigger Tanks

✅ Keeps water clean and free from debris
✅ Supports beneficial bacteria for biological filtration
✅ Maintains stable parameters for sensitive fish
✅ Reduces the need for frequent water changes

1. Canister Filter (ATMAN, Sunsun, Fluval)

Best for: 3ft–8ft tanks

Filtration Type: Mechanical + Biological + Chemical

Why it stands out:

Large filter media capacity
Powerful motor for high flow rate
Silent operation
Ideal for planted and monster tanks

External Filter

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2. Internal Power Filter (SOBO WP Series)

Best for: 2.5ft–4ft tanks

Filtration Type: Mechanical + Aeration

Why it’s great:

Easy to install
Works inside the tank
Strong flow and foam filtration
Suitable for tanks with moderate bioload

Internal Filter

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3. Hang-On-Back (HOB) Filter

Best for: 2.5ft–3.5ft aquariums

Filtration Type: Mechanical + Biological

Why it’s useful:

Doesn’t take up space inside tank
Easy to clean
Adjustable flow rate
Great for community tanks

Hang-On Filter

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4. Top Filter Box (Overhead Filter)

Best for: 3ft–6ft aquariumsFiltration Type: Mechanical + BiologicalWhy hobbyists prefer it:

Economical and effective
Water flows over multiple trays
Easy to monitor and clean
Works well in custom tanks and commercial setups

Best Use Case: Community tanks, goldfish tanks, or planted setups with good surface agitation.

5. Sponge Filter with Air Pump

Best for: Breeding tanks, shrimp tanks, hospital tanks

Filtration Type: Biological

Why it's recommended:

Gentle on small or baby fish
Great surface area for bacteria
Adds oxygen to the water
Low-cost and reliable

Pair with: Resun or SOBO Air Pump for optimal bubble flow.

Which Filter Is Right for You?

Tank Size	Recommended Filter Type
2–3 ft	Internal Filter / HOB Filter
3–5 ft	Canister / Top Filter
6–8 ft	Canister + Sponge Combo

At Blessings Aquarium, we stock premium brands like ATMAN, whether you're looking for silent operation or heavy-duty performance, our team helps you choose the best filter for your setup.