The Best Aquarium Air Stone For Your Needs:
Keep your fish and plant healthy.

Specification:
Each Air Stone Measures: 3.94" D x 0.67" H
Count: 2 pcs
Shape: Disc
Weight: 6 oz
Applicable : 4mm standard ID air tubing
Recommended Air Pump Power: >4w
Suggestion: Soak for an hour before use. Clean once every 1-2 months

Cleaning tips:
1. Put the air stone cleaning tablet in the basin and add appropriate amount of clean water
2. Soak the air stone in water for about 60 minutes
3. Use a brush to gently scrub the stains on the surface of the air stone
4. Rinse the air stone clean

Notice:
1. The air outlet effect varies according to the power and air volume of the oxygen pump and the water depth (the greater the power, the shallower the water depth, and the more uniform the air stone effect)
2. If the air outlet is uneven or no air is found during the first use, it means that the air pump does not have enough air volume, so please replace it with a higher power air pump
3. If it is blocked by dirt and the bubbles decrease after long-term use, please clean it in time
4. The air outlet of the air stone is small, and it is recommended to use a three-way combined air hole for a double-hole or multi-hole air pump to increase the air volume