Guides

Aquarium buying guides

Recommendations organized around the tank, livestock and maintenance decision that changes the shortlist.

Cooling

Cooling · Aug 30, 2026

Best Aquarium Chiller for an Axolotl: 7 Cooling Options

Compare aquarium chillers for axolotl tanks and learn how to size cooling safely around the 60 to 64°F target.

Planted Aquariums

Planted Aquariums · Aug 30, 2026

Best Aquarium CO2 System for Beginners: 7 Safer Starting Points

Compare beginner aquarium CO2 systems, from biological nano kits to refillable pressurized regulators, with fit and tradeoffs explained.

Planted Aquariums · Aug 30, 2026

Best Aquarium Light for a Planted Tank: 7 Picks Compared

Compare controllable aquarium lights for low-tech, medium-tech, and high-tech planted tanks by coverage, control, and plant demands.

Planted Aquariums · Aug 30, 2026

Best Aquarium Substrate for a Planted Tank: 7 Practical Picks

Compare planted-tank substrates for rooted plants, shrimp, bottom dwellers, and low-tech or high-tech setups.

Filters

Filters · Aug 30, 2026

Best aquarium filter for a 10-gallon tank

Seven research-based filters for compact 10-gallon freshwater aquariums.

Filters · Aug 30, 2026

Best aquarium filter for a 20-gallon tank

Research-based picks for quiet, flexible filtration in a 20-gallon aquarium.

Filters · Aug 30, 2026

Best aquarium filter for betta fish

Gentle-flow aquarium filter picks for betta fish, with clear tradeoffs.

Filters · Aug 30, 2026

Best aquarium filter for goldfish

High-capacity filter picks for goldfish tanks, with stocking and maintenance caveats.

Heaters

Heaters · Aug 30, 2026

Best Aquarium Heater for a 10-Gallon Tank: 7 Safe Options

A practical comparison of seven aquarium heaters for 10-gallon tanks, with sizing, thermostat and safety guidance.

Fish Feeders

Fish Feeders · Aug 30, 2026

Best Automatic Fish Feeder for Flakes: 7 Practical Picks

Compare automatic aquarium feeders for flakes, with portion-control, scheduling and moisture-management advice.