Always use GE Silicone one. It is one hundred% silicone which is aquarium safe. It accustomed to say it around the tube but for a few cause they eliminated it. It can be nonetheless the same solution nevertheless. Steelhead as well as other species even have their own individual regulations, https://animal-shop-nearby-uae67766.blogdigy.com/the-single-best-strategy-to-use-for-aquarium-shop-nearby-57534515