Beginner guides

Start here. The fundamentals of keeping a saltwater tank.

Cycling builds the bacterial colonies that keep fish alive. Done wrong it kills livestock. Here is the patient, no-shortcut version.

Once your tank is cycled, you need a hardy fish that survives beginner mistakes. These seven species have a track record.

Saltwater isn't 'just freshwater with salt added.' Here's what's actually different — cost, livestock, time, and the satisfaction at the end.

Strip out the marketing. This is the gear list that matters for a stable, beautiful first reef — and what you can defer.