Originally Posted by Andy Sager
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
125gal FOWLR, 20L Sump w/LR and Skimmer, 20T Fuge w/DSB, Cheato, Pods and Algae Turf Scrubber