Advice? Slate

Has anyone used slate in their saltwater tanks? Mainly asking if you think it's safe to use in a marine environment. I'm talking about the chunks of slate you get from a fish store that you use for freshwater tanks.

 

What i want to do is glue some acans that are already growing over the sides of the frag plug and glue them to a flat surface so slate came to mind.

 

I have a Spongeodes on a piece of slate. I bought it already glued and growing to it. I have had it in my 20 gallon for 2 months or so and have not had any ill effects. That's just my experience though and I have no idea if others have used it.

 

I have used non glazed flooring tiles before.

 

Ok cool ill give it a try tonight and if everything dies ill be sure to post here haha. I think it should be ok to use. Just wanted some thoughts from others

 

I have used slate in fresh water but not salt, I would not think it would be an issue. Remember to cook it if you are using a large amount

 

It wouldn't be give just about a 1 or 2 lb chunk

 

I have used true slate floor tiles and also recycled slate housing shingle tiles with no problems. Usually use this for frag grow plates. No negativity that i have notice.

 

I read an article on RC awhile back about someone using unfinished floor tiles from menards for propagation purposes. They would let the coral grow out on the tiles then take a saw to cut them up into frags.

 

I've heard of people putting it in clown breeding tanks for them to attach eggs to so they can be harvested.

 

Yea i saw that too i just didn't know of it was a certain type of slate.

 

Just make sure it is light grey slate. The dark slate has oil deposits in it along with iron.