Aquarium Biochemical Filter for Fish Tank Foam Pond Filtration Sponge Pad Mat 
Product Description:
Item Type:Aquarium Filter Sponge
Material:Cotton
Color:Black
Feature:Non-toxic
Size:50 cm/19.69"*50 cm/19.69"*2 cm/0.79"

Hole Size:  S(50ppi)  M(35ppi)  L(30ppi)  XL(15ppi)
(approx.) Size: (L*W*H)

50X12X2cm

50x25x2cm

50x50x2cm

50x50x3cm

50x50x4cm

50X50X5cm

Features:
1. The elastic density is moderate, the light shading is good, reducing the algae growth. The dense holes are moderate and beneficial to the cultivation of high-density nitrifying bacteria, biochemical cotton to decompose excreta and feed residue, improve the best cleaning effect of water filtration and reduce the mortality of fish.
2. The fabric is thickened, strong and durable with strong permeable, more thorough filtration, thickened 30% ultra-high density fiber, more meticulous filtration, more effective decomposition of impurities in the water.
3. Note: clean once a month without obstruction and deformation.
4. When the filter is dirty, you should clean it in time to keep the filtration effect good.
5. Biochemical cotton is more resistant to wash than the ordinary sponge and white cotton. It can be reusable.

Package Include:
1 x Aquarium Filter Sponge

Notes:
1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors.
2. Due to the screen difference, the color may be a little difference from what you expect, please allow it. 

Aquarium Fish Tank Bio Filter Sponge Foam Pad Fine Mesh Biological Biochemical

Aquatic Bio Sponge Filter Media Pad Cut-to-fit Foam for Aquarium Fish Tank Koi Pond Aquatic Porosity 15 25 35 50 ppi

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Notice:

The new biochemical cotton is relatively elastic and easy to deform. The products are all boxy and large enough in size. They have been compressed and deformed for a long time when they are packaged and delivered by express. It takes about 2 days to wait for him to slowly recover. Press with a heavy object. It is enough to restore to the original state faster, you can measure the size again in two days, if you have any other questions, you can communicate with us at any time, we will solve it for you as soon as possible!