1. Cotton filter for fish tank, double-layer designed, is dense and fine for water purification.
2. Can quickly adsorb ammonia, nitrite, nitrate, phosphate.
3. Energy medium to strengthen nitrification, stable ecology can be rapidly established.
4. Can be long-term stored in a dry place!
1. Material: Biochemical cotton
2. Color: light green
3. Product weight: about 52 g
4. Product size: about 120 * 30 cm / 47.24 * 11.81 in