FRCOLOR 2pcs Protein Skimmer Fish Tank Cleaning air Stones Aquarium air Aquarium air Stones for Fish Tank Oxygen air air Filters Wood Tools airstone Wooden Sponge - IPC17BJ500SV7E060

• Aquarium stone-- produce fine bubbles for oxygen replacement, useful and excellent, lightweight and small size Sponge filter stone-- extend the life of your nutrient solution, help keep fish healthy, and promote hydroponic plant growth Airstones for aquarium-- [suggestion] it is recommended to replace the wooden air diffuser every 2-3 months. air outflow is more stable, making fish healthier and happier Protein skimmer wood -- fish tank bubble diffuser easily produce fine bubbles that help to increase oxygen levels and circulate nutrition, useful and simple 2 gallon fish tank-- aquarium air stone small and compact size, portable and lightweight, easy to use, not take up too much space