Lava Rock # 62 Domestic these are for use in

these are for use in fish tanks that run with an elevated pH level

Its 3-tiered design has plenty of hiding space and perfect surfaces for spawning

and that will make your fish healthier

with no chemicals

One of those reasons is the shapes and structure of these rocks allow you to stack and create caves and areas for privacy and hiding

Lava Rock # 62 Domestic these are for use inLava Rock # 62 is black with a Zebra Rock and some very small accent rocks that make for good contrast The Lava Rock measures 11" High x 14" Wide and weighs right at 10 lbs. All together the group weighs 19 lbs. and all the accent rocks are inert so they don't have any effect in your Aquarium, and they are safe for anything you keep in your tank. It has all been cleaned, and you can use it right out of the box.