D-D Reef-Pro 900 Review

The D-D Reef-Pro 900 is a 90cm reef system with the sort of front-to-back depth that makes aquascaping considerably easier than it is in a narrow aquarium. Its quoted 290-litre system volume is split between a 225-litre display and a 65-litre sump. It feels substantial without becoming impossible to accommodate in an ordinary room.

Delivery and installation

The cabinet arrives pre-assembled, removing one of the least enjoyable parts of setting up a large aquarium. The 90 x 60 x 46cm display uses 12mm low-iron glass and is a two-person lift at minimum. Adjustable feet make accurate levelling possible, although they are best dealt with before the tank is sitting on top.

The extra-tall cabinet puts the display at an excellent viewing height. It also provides more vertical room around the skimmer and other equipment than many compact systems.

Glass, cabinet and finish

The braceless display, polished edges and low-iron glass give the tank a clean, premium appearance. The 60cm depth is its strongest feature: rockwork can have genuine layers and swimming space rather than becoming a wall along the back.

The cabinet is extremely well made. It feels completely solid, with no flex or movement, and is clearly built to support the considerable weight of a fully stocked aquarium for many years. That sense of structural confidence is important when hundreds of litres of water, rock and equipment are sitting above it permanently.

The black-glass weir blends into the rear panel well. A dry cable box provides a sensible route for lighting and pump cables, while removable folding doors give broad access to the sump. The cabinet finish is smart, although salt spray still needs wiping promptly rather than being allowed to dry around the edges.

One disappointment is that the cabinet hinges have started to show signs of rust despite coating them with Vaseline as a preventative measure. Corrosion is always a risk in the warm, humid and salty environment beneath a marine aquarium, but I would still expect the hardware on a cabinet of this quality to resist it better.

I would also like to see a separate dry compartment for the extension lead, plugs, controllers and excess cabling. The built-in cable route helps to keep wires away from the display, but all of the electrical equipment still has to share the main cabinet with the sump. Competitor systems such as Aquamarin show how useful a dedicated electrical section can be for keeping the installation tidy and separating mains connections from the humid sump area.

Sump and plumbing

The sump is sensibly divided into mechanical filtration, skimmer, refugium and return sections, alongside an integrated top-off reservoir. The filter-sock section can be removed for a ClariSea roller, with the plumbing designed to make that conversion relatively painless.

The twin-drain setup has run quietly from the first fill and did not require any adjustment. The supplied plumbing went together as intended and avoids the constant gurgle that spoils plenty of otherwise good reef tanks.

Living with it

Maintenance access is good for a system of this footprint. The display is shallow enough to reach into without feeling like a diving exercise, and the cabinet has room to remove a skimmer cup without dismantling half the sump.

The main limitation is that the generous sump invites more equipment. A roller filter, dosing containers, controllers and power supplies soon consume the available space, so cable management and cabinet ventilation deserve planning from the start.

Final verdict

The Reef-Pro 900 gets the fundamentals right: useful depth, clear glass, a flexible sump and a cabinet designed around maintaining a reef. It suits someone who wants a substantial mixed reef in a 90cm footprint and prefers selecting their own equipment. It is a strong long-term platform rather than a cheap route into reef keeping.