Houyi Expanding Foam is a high-tech material specially developed for ecological landscaping. This material will be expanded and cured in the presence of moisture in the air. It is equipped with a plastic adapter, which makes scape easy and more convenient, greatly improving the user’s control. Quick to harden and easy to use; just shake well and spray! Safe for aquariums, vivariums and terrariums livestock and plants! Good adhesion to a wide variety of surfaces such as uPVC, masonry, brick, block work, glass, steel, aluminium, timber and other substrates (except PP, PE and Teflon). Contains CPC-free propellants which are harmless to the ozone layer. you will get 1x 900gram bottle.