Marco Rocks - Mr Frag Mounts 4kg

Get your frags in place with Marco Rocks Frag Mounts! These natural rocks, with their heavy weight and limestone composition, are ideal for securely growing small frags even in high flow areas. For best results, keep some on hand in your sump to allow for bacterial conditioning, which prevents the growth of nuisance algae under high lights. Plus, the added surface area in the sump promotes the growth of beneficial bacterial colonies. Each piece is about 2-3 inches and 100% natural, proudly made in the USA.