Patio, Lawn & Garden
HAPPYGRILL Pond Filter, 2642 GPH Pond Pump Filter w/13W UV-C Light, Bio Balls & 4 Adapters, Bio Pressure Pond Filter System for 1321 Gal Koi Fish Ponds or 2642 Gal Ornamental Ponds
Bias-adjusted across 799 Amazon ratings, Bayesian-shrunk to the category prior so the headline score reflects relative quality — not a raw star average. Cohort: Patio, Lawn & Garden.
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How the score was built
- Amazon ratings
- 799
- Raw star average
- 4.3 / 5
- Bayesian avg
- 4.30
used for the Bayesian percentile
unadjusted Amazon mean
raw rating shrunk to the category prior
Buy it: View on Amazon →
Same category · Patio, Lawn & Garden
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