PET HOTLE Tank Koi Dry Fish 16mm/26mm Bio Balls 20pcs Pond Filter

Material:Plastic Spongia

Size S:16mm

Size M:26mm

Package Includes: 20 pieces

1.The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria

2.BIO-Balls do not require replacement unless damaged or destroyed

3.In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired

Notes:

Due to different production batch, inner sponge is filled in random color, it might be yellow, green, black or other colors.

It does not influence normal using, they are all made of the same materiral. So please know about this point before you buy it.