Can I put pebbles on aco drain?

ACO ACO 319561 Hexdrain

ACO HexDrain Brickslot provides a discreet slot drainage system for domestic block paving installation and threshold drainage Manufactured using 100% recycled

aco brick slot drain ACO offers precast slot drainage suited for tracks, athletic fields, & other areas such as sports facilities & tennis courts Easy access for cleaning

aco slot drainage channel ACO Polymer Concrete Products have Four Times the Compressive Strength at Half Weight of Conventional Concrete Channels, Which is Easy to Install and