Marine Pure Biofilter Media 1.5" Spheres

1½" Spheres for Ammonia and Nitrite Removal A single MarinePure Sphere delivers the colonization surface of 1,350 traditional 1.5" bio-balls, enabling efficient biological filtration in compact spaces. These spheres excel at establishing deep anaerobic zones essential for denitrification in passive reef systems. They function as a live rock alternative, reducing nitrate accumulation more effectively than natural rock while maintaining a reef-safe environment. Ideal for sumps and oversized filter housings where stacking maximizes contact time and bacterial colonization. Perfect for hobbyists seeking sustainable nitrate control without environmental compromise.

Available for local pickup

At Marine Concept Supply, all sales are final. Due to the sensitive nature of live animals and aquatic products, we do not accept returns or exchanges under any circumstances. Please review your order carefully before completing your purchase. No Cancellations.

If you have any questions or concerns about your order, please contact us at shop@marineconceptsupply.com and we’ll do our best to assist you.

We Ship UPS and will send tracking as soon as the item ships. 

Return shipping for any approved warranties are not covered and will be subtracted from the approved credit total.

Restock Fees apply to some products, due to their size or a manufacturer policy.Each product with a restock charge is marked online, in the description.

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right