2 PZ Cilindro di Pietre d'Aria Grandi, Diffusore di Bolle per Aeratore da 4 X 2 Pollici per Stagni, A
Great for aquariums, DWC systems or ponds. Perfect for aeration in fish tanks, ponds, DWC reservoirs, aquariums, etc. If you connect a bigger air stone to a small pump, the bubbles will be produced only at the front of the stone.