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Water Feature Reservoirs

Reservoirs provide the hidden backbone of a water feature, storing water securely while keeping the focus on the fountain or sculpture above. Install one beneath your chosen piece and it will offer a stable, long-lasting base that supports a clean, continuous flow with minimal maintenance.

13 Reservoirs 52cm To 112cm Kits
From £35 Grids & Tubs
Most Bought 52cm Kit, 3 Sold This Year
Free UK Delivery On Orders Over £50

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About our water feature reservoirs

Thirteen reservoirs and grids from 52cm to 112cm across, £35 to £339. The reservoir is the buried half of every self-contained feature: it holds the water, hides the pump and carries the stone. Pumps are under water feature pumps, and the polished toppings under pebble pools.

Reservoir sizes compared

Sales counts are our own deliveries, June 2025 to June 2026.

SizeExampleCarriesPrice
52cm52cm Reservoir with Grid ⭐ Matt's Pick, 3 delivered this yearBowls and spheres to 40cm£119
90cm90cm Reservoir Grid, 2 deliveredSpheres to 70cm, small columns£159
112cm112cm Reservoir with Grid, 2 deliveredLarge columns and blade pools£339

Matt's note, June 2026

Seven reservoirs went out in the twelve months to June 2026, the 52cm leading on three. The sizing rule I give every caller: the reservoir should be at least twice the diameter of the feature sitting on it, or wind blows the falling water past the catch zone and the level drops daily. Go one size up from the minimum and you top up monthly instead of weekly. Dig the hole 2cm proud, bed the rim on sand, and check level in both directions before the stone goes on.

Frequently asked questions

What size reservoir do I need?

At least twice the feature's diameter. A 40cm sphere wants an 80cm catch zone in any breeze. Bigger reservoirs also hold more water, so they need topping up far less.

How much do reservoirs cost?

From £35 to £339. The basic 67cm tub is £35, the popular 52cm grid kit £119, and the 112cm heavy-duty kit £339.

How much weight will the grid carry?

The rigid grids carry the stone features we sell for their size. Match the reservoir size band to the feature weight, and bed the rim fully so the load spreads to the ground.

How do I install a buried reservoir?

Dig 2cm proud, bed the rim on sand, check level both ways. A reservoir that sits low floods with soil wash; one that leans loses water over the downhill edge.