I'm hear to talk about products that are safe for use in an aquarium. I recently had a center brace break on my 55. Now I intend to derim the tank, and make a paludarium/vivarium. (I've read all over and still understand the difference. Lol)
I know silicone is safe for aquariums. I also know that particular types are not. Which brands are safe? Better yet, what ingredient(s) define a safe silicone? Are any pigmented silicones safe? ie: black, gray, brown, etc.
I intend to do a custom background/terrestrial barrier in the tank. I have found that contractor foam (the pink and blue stuff) is safe and commonly used. I have found that "Great Stuff"(expanding spray foam) is used. Though it seem that people always seal it, or at least the visible parts. There is also a pond foam spray, that comes in a black variety. I understand it is about 4x the cost. I haven't encountered any posts of diy projects with this product.So I don't know of people typically seal this product.
Pink styrofoam and yellow spray foam are not good looks for any project. I have heard of several different methods for taking care of this issue. First, outdoor acrylic paint. I have seen people paint the smallest details to foam waterfalls;algae, shadows, imperfections in the "stone", etc. I have also heard of a certain type of cement that can used over the foam. Can also be pigmented. There is also a product called "Drylok" that can be used and pigmented. I saw one project, where someone used "Titebond II" (a weatherproof wooglue).
I've seen people use organic materials. I've heard of mixing peat moss, sphagnum moss, coco fiber, mixed into silicone, and the other products mentioned.
Of course there's wood. General consensus is that a longdead, properly boiled/dipped/baked hardwood it's ideal. Though specific species are debated continuously. Mopani and Manzanita are obvious.
People have also added sand, to their coating products for texture.
Would any/ all of these materials need to be sealed?
Time to seal any materials that were used. Of course, the safe silicone mentioned earlier. I've also heard of epoxy being used. There are different types of epoxy. What makes them safe or not? I know some will dissolve styrofoam, so i know that would be a bad idea.
If you made it to this part....Thanks! I know this is a really long post, with a lot of questions worked into it. I have spent a.lot of tine.bb reading around of different forums, researching. I would greatly appreciate any help/advice from anyone. Especially if you have first hand experience.
I am Rowdaddy.
20L Convict "Bedroom"
1.5gal in progress
55 gal Paludarium/Vivarium coming soon