This nano air stone is very smooth and exquisite, durability, quiet steady tiny bubbles and high dissolved oxygen rate, fish tank bubbler provide the necessary oxygen, as a fish tank decoration. Specification: Sizes: 1.38 inch / 2 inch / 3.15 inch/4inch Weight: 1.4 oz / 2.5 oz / 5.6 oz/7 oz Exit size: 4mm hoses Compatible air pump power: 1.5W or higher power air pump Features: this airstone won't drop sand For fresh and salt water Driven by small air pump Ultra-micro bubbles, reaching the highest dissolved oxygen rate White color and disc shape, a good aquarium bubbler for your fish Super quiet. Easy to clean, exquisite workmanship, suitable for fresh water and salt water Quality and Safe Materials The aquarium bubbler decorations is sintered at high temperature. Nanomaterials are not easily dissolved, are durable, great for aerating your tanks and oxygenating the aquatic life. Easy to Use Soak the aquarium air stones for 3 hours before use for better effect, Long-term use, clean the air stones regularly as they get clogged after weeks or months of usage. 2 Bubble Effects High output: high dissolved oxygen, suitable for dense fish. Low output: the bubbles are even and delicate, forming a misted landscape. Tips: How to use: When you use it for the first time, there may be big bubbles or uneven bubbles, it is not a product problem. It is very simple. You just need to unplug the air tube,water even runs out of the tube. connect it again, and repeat this several times, you will get a very beautiful atomization effect. How to clean: 1. Put the fish tank air stone in a mild bleach, and turn on the air pump for 1 hour or more at the same time, then brush and rinse.The deeper you put the air stone under water, you may need use a larger wattage air pump to drive it.Air stone surface a very small number of different colors of small points, but after high temperature sintering, the trace of metal elements contained in the material left behind.This is also our bubble stone after high temperature calcination proof.Does not affect the use.Please feel free to tell us if any questions, and we will give you professional advice! Tips: How to use: When you use it for the first time, there may be big bubbles or uneven bubbles, it is not a product problem. It is very simple. You just need to unplug the air tube,water even runs out of the tube. connect it again, and repeat this several times, you will get a very beautiful atomization effect. How to clean: 1. Put the fish tank air stone in a mild bleach, and turn on the air pump for 1 hour or more at the same time, then brush and rinse.The deeper you put the air stone under water, you may need use a larger wattage air pump to drive it.Air stone surface a very small number of different colors of small points, but after high temperature sintering, the trace of metal elements contained in the material left behind.This is also our bubble stone after high temperature calcination proof.Does not affect the use.Please feel free to tell us if any questions, and we will give you professional advice! Aquarium sponge Filter White Aquarium Filter Black Aquarium Filter Small Quiet Aquarium Filter Quiet Turtle Filter Buying Options Add to Cart Buying Options Add to Cart Buying Options Customer Reviews 3.7 out of 5 stars 17 4.0 out of 5 stars 318 4.0 out of 5 stars 17 3.7 out of 5 stars 121 3.7 out of 5 stars 17 Price — no data $9.99$9.99 — no data $9.99$9.99 — no data Aquarium Filter no data no data no data no data no data B35 Air Stone B60 Air Stone A35 Air Stone A50 Air Stone Premium Activated Carbon 400g Premium Activated Carbon Buying Options Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews 4.1 out of 5 stars 21 4.2 out of 5 stars 49 4.2 out of 5 stars 13 3.0 out of 5 stars 10 — — Price — no data — no data — no data — no data — no data — no data Size 1.4 INCH 2.4 INCH 1.4 INCH 1.4 INCH no data no data Suitable for fish tank Any Any Any Any Up to 50 Gal Up to 15 Gal 3 * Filter cartridges Artificial Coral Plant Decorations Replacement Sponge 3 * Filter cartridges Turtle Basking Platform Add to Cart Buying Options Add to Cart Buying Options Buying Options Customer Reviews 4.0 out of 5 stars 318 5.0 out of 5 stars 3 3.7 out of 5 stars 121 4.0 out of 5 stars 318 3.0 out of 5 stars 3 Price $6.99$6.99 — no data $5.99$5.99 — no data — no data Filter Media no data no data no data no data no data