Guides
Guides, by tank size and build stage.
Equipment lists and decisions organized around your actual setup — the long-tail forums own, done properly and linked to the tools that size each piece.
New
40 Gallon Breeder Reef Tank: Setup, Gear List & Cost
The best beginner reef, fully specced — why the 40B wins, the complete gear list, a realistic cost breakdown, and the calculators to size your pump and skimmer.
GuideDC vs AC Return Pumps: Which Should You Buy?
Controllability, noise, efficiency, price, and the failure-mode most people miss — with the calculator to size whichever you pick.