Home Amazon Goldbox deals Amazon: Marineland 48001 Duetto Chemical Filter Cartridge, 2-Pack Amazon Goldbox deals Amazon: Marineland 48001 Duetto Chemical Filter Cartridge, 2-Pack By ARCOM - 11 February 2017 330 0 SHARE Facebook Twitter Amazon Goldbox Deal: List Price: $7.99 Deal Price: $6.69 You Save: $1.30 (16%) Marineland 48001 Duetto Chemical Cartridge Expires Feb 24, 2017