You place a frag on the sandbed and within a week it is buried in detritus, starved of flow, and showing signs of stress that have nothing to do with your water chemistry. The sandbed is one of the most overlooked threats to newly fragged corals, and most keepers only realise it after they have lost something they were growing with care.
The problem is not the coral and it is not your tank. It is placement. Frags sitting directly on sand are exposed to low flow, sediment accumulation, and physical irritation from shifting substrate. Left unaddressed, a healthy frag can decline within days of being placed.
The Reefphyto Coral Frag Rack Stand is a 3D printed PETG stand designed specifically for sandbed placement, lifting standard frag plugs cleanly off the substrate. The 54mm wide base distributes weight evenly to prevent tipping or sinking into sand, reinforced triangular braces add structural rigidity, and the 12mm inner diameter accommodates standard frag plug stems. Printed in reef-safe PETG in our Welsh facility, each stand is durable, non-toxic, and resistant to saltwater over the long term.
With your frags elevated and stable, flow reaches the coral from all directions, detritus cannot settle beneath the plug, and the growing surface stays clean. Frags that were struggling simply from poor positioning start to encrust and extend with a consistency that makes a visible difference within a short time.
We have been designing and printing reef tools from our facility in Wales since 2008, applying the same attention to detail we bring to our live cultures. Darren is available directly if you have questions about placement, fragging, or setting up a grow-out system that works.
Give your frags the foundation they need to take hold properly.
Coral fragging is a skill that takes time to develop. Getting a clean cut, attaching securely to a plug, managing the transition period without stress, experienced reef keepers know there is more to it than it first appears. What often gets less attention is what happens after the frag is placed. The grow-out environment matters just as much as the fragging process itself, and the sandbed is one of the environments least suited to early coral recovery.
The Reefphyto Coral Frag Rack Stand exists to solve a specific, practical problem: keeping fragged corals stable, clean, and correctly positioned during the critical early weeks when they are most vulnerable.
Reefphyto Coral Frag Rack Stand - Design and Specifications
The Reefphyto Coral Frag Rack Stand is 3D printed in-house at our Welsh facility from reef-safe PETG, the same material used across the Reefphyto 3D reef tools range. PETG is non-toxic, saltwater resistant, and structurally stable in the marine environment over the long term. It does not leach plasticisers or degrade in the way that some lesser plastics do under constant saltwater exposure.
The stand measures 54mm at the base, wide enough to distribute weight evenly on sand without tipping or sinking under normal flow conditions. Height is 31mm, lifting the frag plug to a position where water movement is meaningfully better than at substrate level. The inner diameter of the plug hole is 12mm, which fits the vast majority of standard commercially available frag plugs. Triangular braces on the underside of the stand add rigidity and prevent flex or collapse under the weight of larger frags.
Available in black, white, and sky blue, and supplied in 3-pack or 6-pack format.
Who the Coral Frag Rack Stand is Designed For
This stand suits any reef keeper who is actively fragging corals or receiving frags from swaps, sales, or trading. It is particularly useful for keepers running a dedicated frag tank where multiple new corals are in various stages of establishment at the same time. A stable, elevated position for each plug keeps the grow-out process organised and reduces the chance of frags coming into contact with each other or with the substrate.
It is also well suited to display aquariums where frags are placed in sandbed areas while the keeper decides on a permanent mounting position. Rather than leaving a frag on the sand for days or weeks during which time it may begin to decline, the stand keeps it viable and healthy while placement decisions are made.
Marine fish breeders using coral frags as environmental enrichment in grow-out systems will also find the stands useful for keeping the environment clean and structured.
Coral Frag Rack Stand vs Coral Grow Out Discs - Which Do You Need?
Both products are part of the Reefphyto 3D reef tools range, but they serve different purposes. The Coral Grow Out Disc is a flat mounting surface designed for corals to encrust onto directly, it is the growing substrate. The Coral Frag Rack Stand is a support structure for standard frag plugs, elevating an existing plug off the sandbed. If you are working with commercially purchased frags already on plugs, the stand is what you need. If you are mounting bare coral tissue directly and want a clean, textured grow-out surface, the disc is more appropriate. Many keepers use both within the same system.
How to Use the Coral Frag Rack Stand
Place the stand directly on the sandbed in your chosen position. Insert the frag plug stem into the 12mm hole until it sits securely. The wide base will prevent tipping under normal aquarium flow. Position the stand so that water movement reaches the coral from the front, avoid placing directly behind rockwork where flow is reduced.
For frag tanks with multiple new arrivals, space stands so that frags are not touching each other and so that flow is not blocked between adjacent stands. In larger systems, stands can be grouped together in a designated grow-out area of the sandbed for easy management.
The stands are cleanable and reusable. Remove any coralline algae encrustation between uses with a soft brush if required.
Frequently Asked Questions
Will the frag stand sink into my sandbed? The 54mm base is designed to distribute weight broadly enough to prevent sinking under normal conditions on a typical reef sandbed. Very fine, deep sand beds may still allow some settling over time, if you run a particularly deep or fine substrate, placing stands on a flat piece of slate or rock underneath can help.
Does the 12mm plug hole fit all frag plugs? It fits the majority of standard frag plugs available in the UK and European market. If your plugs use a non-standard or oversized stem, contact us before ordering and we can advise on fit.
Can I use these in a sump or refugium? Yes, the stands work on any flat substrate surface including bare-bottom sumps, although they are primarily designed for sandbed use. On bare bottom, you may prefer the Coral Grow Out Disc for direct mounting.
3D Reef Tools, Designed and Printed in Wales
The Coral Frag Rack Stand is part of a growing range of 3D printed reef tools designed and produced in-house at the Reefphyto facility in Wales. Every piece is printed to the same standard we apply to our live culture products with the reef keeper's practical needs as the starting point, not aesthetics or novelty. If you have questions about the stand, fragging technique, or how to set up a grow-out system that works for your species, contact us directly.
