Gear Score Methodology
PetPal Gear Score
Best Aquarium Bacteria Starters for New Freshwater Tanks (2026)
Editorial synthesis of manufacturer documentation from DrTim's, Fritz, Tetra, and API; Merck Veterinary Manual; INJAF; Aqueon's cycling guidance; and hobbyist consensus on r/aquariums and r/PlantedTank.
PetPal Gear Score = (Expert Consensus × 0.35) + (Documentation Transparency × 0.20) + (Real-World Reliability × 0.25) + (Value × 0.20)Factor breakdown
Expert Consensus
35%Synthesized from DrTim's, Fritz, Tetra, and API manufacturer documentation; Merck Veterinary Manual; INJAF; Aqueon cycling guidance; and hobbyist consensus on r/aquariums and r/PlantedTank. The PetPal Gear Score is a composite of expert opinion — PetPalHQ does not run a testing lab.
Documentation Transparency
20%How clearly the manufacturer explains compatibility, dosing, and the limits of what the product actually does. Bacteria starters that oversell instant cycling score lower.
Real-World Reliability
25%Reported success rates and recurring failure modes from r/aquariums, Aquarium Co-Op forum, and Practical Fishkeeping reviews.
Value
20%Per-mL cost at the most common retail size, weighted against treated-volume coverage.
See all score methodologies on the Gear Score index.