Estes Natural Aquarium Gravel - Shallow Creek hm Laboratory grade aspen chips -

Laboratory grade aspen chips - the choice of many professional herpetologists

Supplement contains concentrated potassium

is sought after by many aquarium keepers for its bright

Fill a clean lest tube with 5 ml of water to be tested (to the line on the tube)

Equilibrium™ contains no sodium or chloride (which can be detrimental to a planted aquarium at elevated levels)

Estes Natural Aquarium Gravel - Shallow Creek hm Laboratory grade aspen chips -Estes has been America's number one manufacturer of aquarium aggregates for over forty years. Their products are non toxic and safe to use in aquariums, terrariums and planters. They offer a full line of products that will help you explore your creativity. From sandy beaches to rushing rivers, coastal caves and desert landscapes, they are sure to have the perfect accents to fit your style.