Corner Frag Rack – 91 Hole Honeycomb Coral Rack with Suction Mount

Corner Frag Rack: 91 Hole Honeycomb Coral Rack for the Tank Corner

Every reef tank has a corner nobody uses.

It is too tight for rockwork, the flow swirls round it, and it usually ends up as a spot where detritus gathers and a stray frag gets lost. Meanwhile the frags you have just cut are balanced on the sandbed or wedged into the rock, waiting for somewhere proper to go.

The Reefphyto Corner Frag Rack turns that empty corner into a frag station. It is an L-shaped honeycomb shelf that fits into the corner of your aquarium and holds onto both panes of glass with four suction cups, giving you 91 hexagon holes in a space you were not using.

Picture your frags lined up along two sides of the corner, up off the sand, in the light and in clear flow, where you can check every one of them at a glance.

I have been working in marine aquaculture for more than 18 years and I designed this rack here in Wales, to sit alongside our wall rack and frag rack stand. Each one is printed in reef-safe PETG in our own workshop.

Put your tank's empty corner to work and give every frag a place of its own.

What the Corner Frag Rack Is

This is a corner-mounted frag rack in black PETG with your choice of orange trim, white trim or an all-black finish. Orange and white options have two matching Reefphyto logos, one on each arm. The all-black option has black trim and black logos that blend into the body for a discreet finish. The body stays black in all three colour options.

Two mounting plates meet at a right angle at the back, one for each pane of glass. Each plate comes with two suction cups already fitted, so the rack is held by four cups in total and cannot twist or slide. Triangular braces at the ends of each arm hold the deck rigid and level, even with every hole filled. Inside the L, the corner is cut on a diagonal, which adds extra deck space and room for more frags where the two arms meet.

Why a Corner Rack

A wall rack sticks out from one pane. A corner rack tucks back into the angle of the glass, so it holds far more frags while taking up less of your view and less of the space your fish swim through. Each arm runs 250mm along the glass and is only 56mm deep, so the rack stays close to the panes and out of the way of your scape.

Why a Honeycomb Deck

The 91 hexagon holes are staggered across both arms, so you are never stuck with a fixed grid. Spread your plugs out to suit the corals you have, and move them along as they grow. The open deck lets water move up through the rack past the base of each frag, and lets detritus fall straight through instead of settling around your plugs.

The Perfect Plugs for This Rack

Our Coral Frag Plugs fit this rack perfectly. We print them in our own workshop to suit our racks, so the stem drops straight into a hexagon hole and the plug sits upright and secure on the deck.

Add a pack of 10 to your rack with the Frag Plugs option above. Choose black, white or orange plugs, round or square, and save £1.95 on buying them separately. Pick orange plugs to match the orange trim, or black to keep everything discreet.

Where to Put It in the Tank

Any corner with flat glass on both sides will do, and because it sits on the glass, you choose the height. Start light-sensitive corals lower down and move the rack up in stages as they settle, or keep it high for SPS that want more light. A back corner keeps the frags out of the main view; a front corner puts them where you can check them every day. It works just as well in a frag tank or a lit sump refugium.

Part of the Reefphyto Frag Rack Range

The Corner Frag Rack uses the same honeycomb holes, plugs and colour options as our Tank Wall Frag Rack and our Honeycomb Frag Rack Stand, so they look like a matched set. Use the corner rack for the bulk of your frags, the wall rack on a single pane, and the stand on the sandbed for corals that prefer lower light. Moving a frag between them is simply a case of lifting the plug from one rack and dropping it into another.

Fitting and Cleaning

Scrape the glass clean on both panes where the cups will sit. Push the rack into the corner while it is empty and press each of the four cups firmly into place. Add your frags once it is secure. To clean it, slide your fingernail under the edge of each cup to release the seal, lift the rack out, and scrub it in tank water with a soft brush.

If you are building up a fragging kit, Coral Frag Plugs give each frag its own base and ISTA Aquarium Glue fixes your frags to their plugs.

Corner Frag Rack FAQ

What size is it?

The rack is 250mm by 250mm overall, with each arm running 250mm from the outside corner. Each arm is 56mm deep and the rack is 55mm tall. Each hexagon hole is 12.5mm across the flats.

How many holes does it have?

91 hexagon holes across the two arms and the diagonal inside corner.

Will it fit my tank?

It needs a corner where two flat glass panes meet at a right angle, with at least 250mm of clear glass along each side at the height you want it. It goes on the inside of the tank, so glass thickness does not matter. It does not suit curved or bow-front corners.

Will my frag plugs fit?

Plugs with stems made for the standard 12mm frag rack hole will fit. Our own Coral Frag Plugs fit perfectly, as do our Transparent Coral Frag Plugs.

What is it made from?

Reef-safe PETG, printed in our workshop in Wales. The suction cups are clear aquarium suction cups.

What is in the pack?

One Corner Frag Rack with its four suction cups already fitted, so it is ready to go straight into the tank. Choose "No plugs" for the rack on its own, or pick a Frag Plugs option to add a pack of 10 plugs in your chosen colour and shape.

If you are not sure which corner would suit it best, get in touch. Darren responds personally.