Plants Weights are ideal for using to anchor plants to the bottom of the aquarium. Plants such as Microsorum, Moss and Anubias are typically tied to rock or wood however some people like to have these plants on the base of the aquarium. With these weights, you can attach the plants to them using Aqua Fine Line and position where you like.

They are also ideal for positioning these plants amongst rocks. You can wedge them between the rocks and attached to the ceramic disc, these plants will happily grow - just make sure the roots are not covering by the gravel or substrate. 

Lastly, you can use them to anchor down food that bottom feeders consume.

Each weight is roughly 13g.

Note - these are not brand new but in perfect working condition.