Originally Posted by Cb24
What about diseases they may carry?
When bringing home self caught inverts, you need to be aware that some will carry parasites and diseases with them that won't harm the animals at sea but can overrun a closed system tank. Any invert that holds water (i.e. anemones, cucumbers, corals, etc) should be quarantined for at least 3-4 weeks before adding to a main display tank. This will give any disease or parasite a chance to become apparent or die off from lack of host.
Items like crabs and shrimps should be safe but snails are known disease carriers. I would suggest you always quarantine any new item before exposing your tank.
Hope this helps