lace rock

[Brass sliver]

I'm looking for lace rock for my cichlids tank. All I have in the tank for rock are limestone. They don't stack well and they are heavy. I want to have a higher pile for estetics and to offer more caves. At my lsf it is can$3.99/lbs. It seems pretty pricey to me since I got 85lbs of limestone for can$2.5
at my local gardening place. Is lace rock available at gardening centre or has a diffrent name or is any other rock similar that I could get cheap?

 

[blitzen25bm]

check with places that sells bricks and blocks, masonary places will usually stock rock goods. otherwise looking up the local building materials place.