Bio Sponge Prefilter Media Pad Cut-to-fit Foam 20” x 20” x 2” Heating Bulb These heavy glass bowls are

These heavy glass bowls are also perfect for use as terrariums or for crafts

Designed with durable materials

clean and healthy pond environment for ponds up to 4000 gallons

serving as a breeding area

Balanced calcium & phosphorus levels support healthy growth

Bio Sponge Prefilter Media Pad Cut-to-fit Foam 20” x 20” x 2” Heating Bulb These heavy glass bowls areProduct Details: Size: 50 x 50 x 5cm; Dense shape makes it effective to avoid residue, the filter sponge is the first line of defense in removing dirt and floating debris from your terrarium or aquarium, and the filter can be cut any sizes as you needed. Excellent water permeability makes it avoid blockages and provide the largest adhesion area for bacteria, cultivate the nitrify bacteria for biological filtration. The filter can decompose the