EasyPro Mesh Media Bags Bag Dimensions:12" x 18" and is safe for fish

and is safe for fish and wildlife

7% Probiotics Vitamin A Vitamin D3 Vitamin E Ascorbic Acid Min

Does not interfere with fish or invertebrate respiration

This tubing is specifically designed to be buried in the ground so that you can locate professional air pumps away from the body of water to which they will be providing air

Uses environmentally-friendly R134a refrigeration - no freon

EasyPro Mesh Media Bags Bag Dimensions:12" x 18" and is safe for fishEasyPro Mesh Media Bags are perfect for holding all types of media including salt, carbon, zeolite, barley pellets, filtration media and more! Black nylon mesh will last for years and bag has a drawstring with an easy push button release. Media not included SKU Mesh Size Dimensions EMB1 1 8" mesh 12" x 12" EMB2 1 8" mesh 12" x 18" EMB3 1 8" mesh 18" x 18" MB18F 3 16" mesh 18" x 30" MB21 1 4" mesh 21" x 30" MB22 1 4" mesh 22" x 26"