Grout Sealer?

[SuperSaiyanGoku]

Hello Everyone. I am starting my first Vivarium and have built the waterfall feature and the rock wall. I will be posting pictures on this forum in the next couple of days. I used the Ultra Flex RS premium grade ultraflex rapid setting morter. This was the only one that didn't have the Bioblock technology, which I assumed that would be bad for a VIV. My plans are to use krylon fusion to highlight the rock wall in certain areas and use as detailing. When I have the rock wall to my liking, I was going to seal it with Tile Guard One Step Grout Sealer. It comes in an aerosol can that I can hold upside down and spray which is very convienant in tight spaces. What I wanted to know is this non toxic for dart frogs? I can't find anywhere that it is used or has been used. If this can't be used what can I use to seal the rock wall and waterfall feature? I want the mortor to be stain free and less prone to wear by sealing it. The rock wall is GS and polystyrene hotglued and siliconed in. Then mortared over. This viv took a lot of hours to mortar and sculpt. I am almost finished and didn't want to mess up the last step. Also should I PH balance it with vinegar first then seal it? I will get pics in here soon.

[SuperSaiyanGoku]

Nevermind, I found people on the internet that have been hospitalized for the stand and spray grout sealer. A Warning About Stand and Spray Sealer - Page 5 - Ceramic Tile Advice Forums - John Bridge Ceramic Tile In this forum people are using it on their floors and 2 people have been killed doing it. And this is on the floor. I can't imagine my face in my 26 gallon bow front spraying this in my tank in the basement. I'll kill myself and all my herps and fish! What do you think about a marine boat epoxy or hardener? Would this work instead? I was thinking this route and after applied I could sprinkle some sand in the mix to rough it up a bit. What do you all think?