Save yourself the headache and save yourself the CO2 adjustment. I only fill it up with water once a month. It hardly evaporates. It has a built in check valve so you don't have to mess with plastic check valves that keep filling up with water. Durable, heavy-duty material and leak-proof.
EcoBio-Block Stone: Natural Water Clarifier & Odor Remover for Aquariums (Medium) - Treats 15-40 Gallons Efficiently
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π API Stress Coat Water Conditioner | Tap Water Safe, Repairs Fish's Protective Coat, Use for Water Changes, Adding Fish, and Injuries
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Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
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π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review