UV Sterilizer buyer guide. Inline UV-C lamp that kills free-floating algae spores, bacteria, and parasite tomonts.
UV Sterilizer TL;DR
Price range: $60-$400.
Inline UV-C lamp that kills free-floating algae spores, bacteria, and parasite tomonts.
How uv sterilizers work
Inline UV-C lamp that kills free-floating algae spores, bacteria, and parasite tomonts. Mechanical filtration captures particulates, biological filtration hosts nitrifying bacteria, and chemical filtration uses media (carbon, GFO, resins) to remove dissolved compounds.
Sizing for your tank
Rule of thumb: pick a filter rated for 4-6x your tank volume in gallons-per-hour turnover. Oversizing is safer than undersizing - cleaner water, more nitrifying surface area, more headroom for stocking growth.
Setup and maintenance
Rinse mechanical media in old tank water (NEVER tap water - chlorine kills bio-bacteria) every 2-4 weeks. Replace chemical media (carbon) monthly. Bio-media is permanent - never replace unless physically degraded.
Common uv sterilizer mistakes
Replacing all media at once - destroys the bio-filter. Rinsing in tap water - same result. Skipping pre-filter sponges - shortens main media life. Buying undersized for the tank - leads to ammonia spikes.
Cost expectations
UV Sterilizer runs $60-$400 new. Used units in working condition: 40-60% off. Replacement media adds $30-$150 per year.
UV Sterilizer FAQ
Is a uv sterilizer good for a beginner?
Yes - sized appropriately, all major filter types work for beginners.
How long does a uv sterilizer last?
5-15 years with normal use; impellers and seals are wear items.
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