Easy to use plant weights just Gently wrap around the base of the plant. Safe for aquarium use, will not rust, dissolve or alter the pH of the aquarium, Non Toxic to fish and other livestock. Use on Plastic plants or Ornaments to hold in place And in Ponds / Water Gardens Too. Heavy to keep plants weighted down so they stay in place but small enough to be easily hidden in the gravel to keep your Fish Tank Beautiful. Durable but Pliable and easy to Bend or Flex and Cut your own Size with standard scissors. Gently wrap around the base of the plant and bury the root ball under the gravel. 100 % Proudly Made in the USA.