Slate

[adammichael]

ive got sum fancy blue slate but i didnt buy it specially for fish would it be safe for an aquarium

 

[celaeno]

does it have streaks running through it? if it does, it's no good.

you can also try the acid test. that's where you add a few drops of vinegar onto the slate. if it fizzes, it will raise the ph of your tank water, so is no good.

 

[raptorrex]

boil it, soak it, test it and put it in!

 

[adammichael]

so i boil it then soak it in a cloth? Ive tested it with the vinegar and it does'nt fizz

 

[raptorrex]

i just put it in a big pan with a tight lid, didnt bother with cloth

 

[celaeno]

if it seems ok, then just boil it and let it cool before placing it in the tank.

 

[dirtydog]

i have some thin roof slate id like to use as long as i can prevent sharp edges...
it has kind of gold flecks in it (metal?). should I just do the vingar test?

 

[dirtydog]

i have some thin roof slate id like to use as long as i can prevent sharp edges...
it has kind of gold flecks in it (metal?). should I just do the vingar test?

 

[Yazan]

i have some thin roof slate id like to use as long as i can prevent sharp edges...
it has kind of gold flecks in it (metal?). should I just do the vingar test?

I don't think thats a good idea.

 

[The-Wolf]

checkout the pinned rock topic (see sig)
generaly speaking slate is inert and safe, but there are exceptions