I feel like I need it every three months, I'm not sure if that's a problem with this product but I just feel like it lasts longer should hold. After about three months there are no more blisters and it's time to buy a new one (and clean the tanks). The good news is that they are not very expensive.
Sink filter Prio New Water Start Osmos OU380 white
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KEDSUM Battery Aquarium Air Pump: Ultra-Quiet Rechargeable Fish Aerator with Dual Outlets - Ideal for Fish Tanks, Outdoor Fishing, Fish Transportation, and Power Outages
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Aquael Fan Filter Mikro Plus
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KEDSUM 330GPH Ultra Quiet Submersible Pump With High Lift And Grounded Power Cord - Ideal For Fish Tanks, Ponds, Aquariums, Statuary, Hydroponics - Includes 3 Nozzles And 1500L/H Water Flow
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Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
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Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
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π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
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