Liny under gravel filter

The LINY Under Gravel Filter (UGF) is a reliable and low-maintenance filtration system designed to keep your aquarium water clean, clear, and healthy. Installed beneath the gravel substrate, this filter uses your tank’s natural gravel bed as a biological filtration medium, promoting the growth of beneficial bacteria that break down harmful waste.

Ideal for freshwater aquariums, the LINY Under Gravel Filter improves water circulation by drawing debris and impurities down through the gravel, helping maintain a stable and balanced aquatic environment for fish and plants.

Key Features

• Efficient biological filtration using gravel as filter media
• Promotes growth of beneficial bacteria to reduce ammonia and nitrites
• Improves water clarity and circulation
• Easy to install and maintain
• Durable plastic construction

• Suitable for freshwater aquariums

How It Works

The filter plates are placed at the base of the aquarium and covered with gravel. When connected to an air pump or powerhead (sold separately), water is drawn down through the gravel and uplift tubes, trapping debris and supporting biological filtration.

Ideal For

• Small to medium freshwater aquariums
• Community fish tanks
• Beginner and low-maintenance setups

The LINY Under Gravel Filter offers a simple, cost-effective filtration solution that supports a healthy aquatic ecosystem with minimal effort.