4 lbs. Denitrifying Aquarium Red Lava Rocks "DIY" Caves, Fire Pits, "Grilling"

Description

Red Lava Rocks ( 4 Pounds) Different shapes and sizes. Perfect for stacking on each other or making backgrounds, caves in Fresh water aquariums.
Great for natural Back Grounds silicone to your aquarium back for a natural background or waterfall. My 13 Year old daughter picked out some, used silicone (100%) stuck some together and made a nice stack that her small turtles climb on top of to bask.
Of course we washed them, put them out in the sun light for a day to dry before we glued the together. We also waited two days for them to dry good.
Use Google to search for using Lava Rock to Remove Nitrates. These would be a great substance for a canister filter in a fresh water tank. I've taken some close up pictures to see how porous they are. I can get plenty more of these and would be glad to work out a fair price for as many pounds that you want. Or perhaps what would fit in a Large or Medium Flat Rate box which would give you the best shipping price for the weight. These four pounds will fit in a Padded Priority Mail Flat Rate Envelope for the best shipping price.
Only about 2 pounds are shown so you will get twice as much as in the pictures.
Great for grilling and fire pits as well. If you need more than this we also have another listing with a 10 pound box for sale.