Based on my experience, this is a fantastic product for those who want to enhance THEIR aquarium`s aesthetic appeal. The tourmaline not only adds a great texture but also helps keep the water and the crayfish healthy. Additionally, it's affordable and easy to install, making it perfect even for beginners... The only downside is that it's somewhat delicate, so care must be taken while handling it. Overall, I'd highly recommend this product to anyone looking for reliable and attractive pet supplieSee full review