OxyCore Aerobic Zone Volume:950 ml At Blue Shark we believe

At Blue Shark we believe in ever keeping attention on bio-filter health

irregular surface gives bacteria's attachment structures (pili) something to physically grip

No refrigeration required

for every 20 gallons (76 L) directly into water

You haven't solved the problem

OxyCore Aerobic Zone Volume:950 ml At Blue Shark we believeDEEP CORE NITRIFICATION Ammonia is the silent killer in aquariums. Every fish you add, every piece of food left uneaten, produces ammonia that will accumulate and turn toxic within days in a tank without a working biological filter. Your biological filter IS your colony of nitrifying bacteria microscopic organisms that convert ammonia into nitrite, then nitrite into harmless nitrate. But these bacteria need the right home: a rough, porous, oxygenated