Bloomroom Flexi-Mat Reservoir Catchment Tray
Bloomroom Flexi-Mat Reservoir Catchment Tray
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
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Catch a Reservoir Leak Before It Reaches the Floor
The Bloomroom Flexi-Mat is a waterproof catchment tray that sits underneath a grow tent, hydroponic system or nutrient tank and holds a spill where it happens. The body is a resilient waterproof sheet, and a demountable frame of legs and feet raises a 20cm wall on all four sides. A fitted drain tap lets you run the contents off into a bucket rather than bailing by hand, and the whole thing folds flat between runs instead of taking up rigid tray space. Three footprints cover everything from a single tent to a full room: 115 x 115cm, 195 x 95cm and 290 x 290cm.
What's Included
- Catchment tray - waterproof, flexible sheet body
- Legs - raise the 20cm sides that give the tray its volume
- Feet - spread the frame's load across the floor
- Drain tap - fitted, for quick and controlled emptying
Key Benefits
- Holds far more than most reservoirs - 264.5 litres at 115 x 115cm, 370.5 litres at 195 x 95cm and 1,682 litres at 290 x 290cm, measured to the top of the wall
- A 20cm wall on every size - depth is identical across the range, so you choose on footprint alone
- Integrated tap - drains to a bucket or a pump, with no siphoning and no mopping
- Super durable waterproof material - built to take the weight of a full tank's worth of water
- Folds flat - collapses down for storage, unlike a rigid tray of the same footprint
- Doubles as a growing bed - fill it with the medium of your choice and use it as a container
- Assembles in minutes - no tools and no permanent fixings
Water Damage From One Failed Fitting
A split tank, a perished grommet or a dripper line that works loose will empty a reservoir across the floor over a few hours, and it almost always happens overnight. On a suspended timber floor that is a ceiling repair underneath; in a rented property it is the deposit. Large-reservoir systems such as Wilma, AutoPot and IWS hold more than enough water to do that damage in a single failure. The useful comparison is the capacity above against the volume of your own tank - where the tray comfortably exceeds it, a total loss stays inside the tray and leaves through the tap.
How to Use
- Size it: match the footprint to the tent or system and leave a margin all round, so run-off lands inside the wall rather than on its edge
- Check the floor first: water weighs 1kg per litre, so a tray containing a failed 200 litre reservoir puts 200kg in one place - site it over a solid floor or across joists, never on a single board
- Assemble: fit the legs and feet to raise the sides, which takes a few minutes
- Position: set it down level before the tent, system or tank goes on top
- Drain: open the tap and run the water off, then dry the sheet before folding it away
Technical Specifications
- Small: 115cm x 115cm x 20cm - 1.32m² footprint - 264.5 litres to the brim
- Medium: 195cm x 95cm x 20cm - 1.85m² footprint - 370.5 litres to the brim
- Large: 290cm x 290cm x 20cm - 8.41m² footprint - 1,682 litres to the brim
- Wall depth: 20cm on all three sizes
- Material: resilient waterproof, flexible sheet
- Frame: demountable legs and feet
- Drainage: integrated tap
- Storage: folds flat
- Supplied with: catchment tray, legs, feet and drain tap
- Suits: Wilma, AutoPot, IWS and other large-reservoir systems
Capacities are the volume to the top of the 20cm wall - the maximum the tray can contain in a worst-case spill, not a fill level to work to.

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.