Went to Daiso at VivoCity after lunch today for a walk. Saw this plastic partition comb(2 per pack) that comes in various size.(from 5cm, 7cm, 9cm, to 12cm) It's meant for creating partition in drawers & trays for storing small items. Being a reefer, it naturally look more like an overflow comb to me. It's just a few dollars & should be suitable for those who like to construct their own tank or sump. Cheers,