![[ALWAYS IN STOCK] MarinePure® 8](https://cdn.shopify.com/s/files/1/0608/5771/2849/products/marine-pure-8x8x4-block-652264.jpg?v=1702329103)
Pay in installments of $32.25 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
[ALWAYS IN STOCK] MarinePure® 8"x8"x4" Biofilter Block – Maximum Surface Area for Superior Biological FiltrationMarinePure Biofiltration Blocks The Complete Nitrification & Denitrification Solution Advanced Biological Filtration for All Aquatic Systems Specially engineered ceramic blocks providing dual action water purification: Eliminates Ammonia Nitrites (aerobic nitrification) Reduces Nitrates (anaerobic denitrification) Works in Freshwater & Saltwater Perfect for Sump or Wet Dry Filters Unmatched Performance 8"x8"x4" Block Features: 139,800 ft ft surface
MarinePure® Biofiltration Blocks – The Complete Nitrification & Denitrification Solution
Advanced Biological Filtration for All Aquatic Systems
Specially engineered ceramic blocks providing dual-action water purification:
✔ Eliminates Ammonia/Nitrites (aerobic nitrification)
✔ Reduces Nitrates (anaerobic denitrification)
✔ Works in Freshwater & Saltwater
✔ Perfect for Sump or Wet/Dry Filters
Unmatched Performance
8"x8"x4" Block Features:
• 139,800 ft²/ft³ surface area – 1,400x more than bio-balls!
• 80-90% open porosity – Allows deep anaerobic bacteria colonization
• Ultra-lightweight (0.3-0.5 g/cc) yet durable
• Chemically inert – Won’t alter water chemistry
Flow Recommendations:
→ Fast flow = Maximum ammonia/nitrite removal
→ Slow flow = Enhanced nitrate reduction
Sizing Guide
For Nitrification (Active Systems):
| Tank Size | Blocks Required |
|---|---|
| 100 gal | 1 block |
| 250 gal | 1 block |
| 500 gal | 1-2 blocks |
For Denitrification (Passive Systems):
| Tank Size | Blocks Required |
|---|---|
| 50 gal | 1 block |
| 100 gal | 1 block |
| 500 gal | 3 blocks |
Why MarinePure Outperforms
✅ 10,000% more surface area than plastic bio-balls
✅ Simulates live rock filtration without the cost
✅ Maintains crystal-clear water 24/7
✅ Military-grade ceramic – Never needs replacement
Pro Tip: Place blocks in skimmer risers or low-flow zones for maximum nitrate control!
Complete Your Filtration System Today!
(Also available in Plates, Spheres and GEMS for smaller tanks)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy