Great value, and they work!
Absolutely necessary in my tanks from now on. I do a lot to make sure my shrimp and snails have the best diet. Through trial and error I have found that these rocks and regular feeding of a quality food is all I need. So far. I can update long, long term, but these really work. My shrimp are molting regularly and my loss has gone way down. *BONUS, my snails clean it regularly, so that is a +++. I don't see why you would need to replace as they will last a really long time. My snails and shrimp love them! Just drop them where you want them! Great value, they work! I use them in every tank. Read more
























