Joeyg2100
Fish Fanatic
Here is a picture of my cave I made.
I used Lava rock (the kind that is for landscaping $3 for 10lb bag) and aquarium caulk. Total cost of $9. I used about half the caulk but I could have used less as you can see from the pictures. So I would say you could make 3 caves this size for $9. If you do decide to make one of these make shure you boil/wash the lava rock, as it had a lot of loose red dust on it
I used Lava rock (the kind that is for landscaping $3 for 10lb bag) and aquarium caulk. Total cost of $9. I used about half the caulk but I could have used less as you can see from the pictures. So I would say you could make 3 caves this size for $9. If you do decide to make one of these make shure you boil/wash the lava rock, as it had a lot of loose red dust on it