Starting your first reef tank: essential equipment and what can wait

A first reef tank is easier to plan when you start with the animals you hope to keep. Their adult size, feeding needs, lighting and compatibility should shape the equipment list. Buying a collection of impressive devices first can leave you with a system that is expensive to run or awkward to maintain.

Write a simple plan before you buy

Choose a realistic space for the aquarium and make a shortlist of suitable fish and corals. Check access for cleaning, water changes and removing equipment. Include the cabinet and any sump when measuring the footprint. A filled aquarium is heavy: use a suitable stand and resolve questions about floor support before installation.

Build the essential system

• Aquarium and stand: sized for the animals and location, with space to service the system.
• Temperature control: equipment appropriate to the system, plus a separate way to check the water temperature.
• Biological filtration and circulation: suitable rock or filter media, pumps and movement around the aquascape.
• Water preparation: a reliable supply of suitable purified water, marine salt and dedicated mixing containers.
• Testing: a suitable salinity instrument and tests appropriate to cycling and your planned livestock.
• Lighting: selected for the corals you intend to keep, rather than appearance alone.
• Escape protection: a correctly fitted lid with openings planned around the equipment.

A sump, all-in-one rear chamber or external equipment arrangement will change the shopping list. A protein skimmer can be a useful part of the filtration plan, but its specification should suit the system rather than a generic checklist.

Decide which upgrades solve a real problem

A top-up system, dosing pumps, controllers and a roller filter can make particular jobs easier. They still require cleaning, checking and consumables. Decide which tasks you need to automate first; you do not have to buy every upgrade at once. Budget space and connections for later additions so that upgrades do not require rebuilding the cabinet.

Budget for the ordinary weeks

Set aside money for electricity, salt, water, food, test reagents and replacement parts. Keep enough budget for maintenance equipment and time for the fishless cycling stage. Avoid setting a livestock arrival date until the system is ready.

Before ordering a bespoke lid, finalise lights, cables and feeding access. Our guide to choosing lid options explains the decisions to consider. For ongoing care, start with our reef maintenance routine.