Tetra EasyCrystal Filter Pack 250/300

Original replacement filter media for EasyCrystal 250 and FilterBox 300 — 3 pieces

Mechanical and biological filtration in one easy-to-replace cartridge

✅ Difficulty: Easy — Remove old cartridge, insert new one. No tools required.

The Tetra EasyCrystal Filterpack 250/300 is the original replacement filter media for the Tetra EasyCrystal Filter 250 and EasyCrystal FilterBox 300. The filter pack combines mechanical and biological filtration in one easy-to-replace cartridge for crystal clear and biologically healthy aquarium water. Contents: 3 pieces.

🔧 Product specifications

🚚 Delivery & warranty

• Fast delivery from our store — ready to use immediately
• Shipping Tuesday or Friday → Read more about shipping
• Delivery with track & trace, usually within 1–2 business days
• Problem with your order? We'll solve it together. Contact us via our customer service.
• Free shipping from €59,-

✂️ Usage tips

Replace the filter cartridge every 4 weeks for optimal filter performance. Briefly rinse the new cartridge with aquarium water before placement. Never perform filter replacement and partial water change simultaneously to maintain biological filtration.

💡 Tip

With 3 pieces per pack, you have a supply for 3 months — handy to always have a fresh cartridge on hand.

❓ Frequently asked questions

Does this filter pack also fit other Tetra filters?
This filter pack is specifically for the EasyCrystal Filter 250 and FilterBox 300. Check your filter model for the correct replacement cartridge.

How often should I replace the filter cartridge?
Every 4 weeks for optimal filter performance. Replace sooner if there is heavy fish load or cloudy water.

Do you have another question? Feel free to contact us — we're happy to help you make the right choice for your aquarium.