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Sponge Filter Guide: How It Works, Setup and Cleaning
How a sponge filter works, sponge vs hang-on-back, what size filter and air pump to buy, setup with a check valve, and how to clean it in tank water.
Time's Ripple
Aquarium guides and essays that linger.
Time's Ripple
Aquarium guides and essays that linger.
Equipment
How to choose aquarium equipment from the product page: heater wattage and safety features, light output and mounting, CO2 systems and their parts, and the shop policies to read before you order glass or gas.
How Much Electricity Does a Fish Tank Use? (And How to Cut the Heater Bill This Winter)
What a fish tank heater, light and filter cost each month, how to measure your own tank, and which changes lower the bill.
Betta Fish Heater: Do Bettas Need One, and How to Choose the Right Size
Do bettas need a heater? Water temperature, heater size by tank, safety features and how to check that yours is working.
How to Choose a Planted Aquarium Light: What the Numbers Mean and What Your Plants Need
Choosing a planted aquarium light: how much light your plants need, what PAR and Kelvin mean, and sizing by tank length and depth.
Aquarium CO2 for Beginners: Do Your Plants Need It, and Which System to Choose
Do your aquarium plants need CO2? How to tell, generator or cylinder, the parts of a system, and how to set one up safely.
