Can I put pebbles on aco drain?

Can I put pebbles on aco drain? aco slot drain ACO Slot Channel Drain ideal for domestic threshold and lightweight vehicle areas only Can handle a flow rate of aco slot The ACO HexDrain Brickslot is perfect for Load class A15 channel drain solutions The clever design of the Brickslot allows the channel drainage to be used

aco slot ACO HexDrain Brickslot is a discreet plastic slot drainage channel suitable for patio and garage

acorn pixie slot ACO ShowerDrainACO Stainless Steel Floor DrainACO Stainless Steel Trench DrainACO Stainless Steel Hygienic Box DrainACO Stainless Steel PipeGoslyn  ABOUT PRODUCT RECYFIX paverslot drainage channels have discreet slotted inlets that make them suitable for use domestically and in town centres and