2Hr Aquarist APT1 All-in-One Fertilizer
ISTA CO2 Ceramic diffuser
ISTA 3-in-1 Compact CO2 Diffuser
Quick Overview
ISTA 3-in-1 CO2 Diffuser with bubble counter and safety check valve.
Always allow ceramic disc to sit in water for 24 hours before fixing it up to your CO2 system.
