6PCS Pre Filter Sponge Aquarium Filter Intake Cover Aquarium Filter Sponge Foam Rolls Accessories for Aquarium Fish Tank, Small Hole

Aquarium Pre-Filter Sponges made of biochemical sponge,durable, no harm to your baby fish and no harm to water, good for freshwater and saltwater environments.
Dimension: Approx. 6.0cm*3.5cm/2.36 x 1.37inch cylinder, the inside hole diameter is 1.0cm/0.39 inch, please note these foam are pre-filter sponges, so only have single hole. Please measure the size before purchasing so that you can buy the right product.
Sponge cover is single-sided connected onto the water inlet of your filter. These pre-filter sponges could help to trap particles and debris, and prolong the life of your filter media, provide efficient water flow with less clogging for long lasting filtration.
High density design,will not block the flow of water into the filter. Aquarium intake sponges protect small fish and shrimp from getting sucked into the filter intake, provide them a safe environment, it is good for their healthy growth.
Suitable for wall-mounted filter inlet and various aquarium product inlets tube size range is from 1cm and 1.3cm. Easily connects to filter intake stem, prevent fine debris or particular matter into filter. Easy to take out to clean.

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