Yes!!! Flex Seal is 100% Safe!!! The ingredients in this product have been thoroughly tested by the US FDA, EPA and others. Flex Seal is generally recognized as safe for use in households. Fish are very sensitive to chemicals. When you are coating your leaky area, please make sure the room you are working in is well ventilated. Also please try not to bring any of the product into contact with fish or other small animals! But rest assured that this product is safe for both people and our aquatic friends.

Silky Terrier Dog Breed Playing Aro... Silky Terrier Dog Breed Playing Around

Flex Seal creates a seamless barrier that will not crack or peel. Nothing sticks to it – no more scrubbing off dried caulk lines! It will remain flexible forever – even when exposed to water. And it’s paintable too! This product is ideal for a variety of household projects and automotive repairs, including leaky roofs; hot tub covers; leaky boats; truck bed liners, and more! It’s great for sealing out water and air under the siding.

Flex Seal is available at Wal-Mart, Lowe’s, or Home Depot. You can find it in the roofing section. Flex Seal is not for use in bathrooms (it’s not waterproof) or under the hood of your automobile (our warranty does not cover misuse).

In addition to being safe, Flex Seal is environmentally friendly. It’s non-toxic and contains no harmful solvents or VOCs. Flex Seal is proudly made in the USA!

Flex Seal can also be used successfully to waterproof shoes. If you have kids, walking up the stairs with water dripping from your shoes is so annoying. To keep your shoes dry, simply treat with Flex Seal before wearing! Just brush it on the soles of your boots or shoes and let it dry.

Conclusion: Yes, flex seal is safe for fish. But please make sure you are well ventilated before using it and do not bring the product into contact with fish or other small animals. And of course, keep this product away from kids! Only use Flex Seal to close leaks on your boat or truck bed!!! Thank you!!!