Icecoldoutline

My pistol shrimp does move pieces of crushed coral from my sand bed to cover it's lair. But has yet to move any empty snail shells. I had three Cortez Hermits in the tank and one outgrew his shell and evacuated which is when the goby sucked him up. I wish I had taken a picture. My little yellow watchman had a mouth full of crab legs. Anyhow since then I've added a couple larger shells and the remaining hermits have successfully swapped out. I was previously under the impression that nudibranchs were very difficult to care for. It's amazing how much technology has come about over the years to make this hobby more interesting. I don't plan on getting into the sea slugs but I think it's very cool that people are successfully keeping them.

I appreciate your opinion on instant ocean. If you haven't used Bioassay and are just encouraging me to use instant ocean than that doesn't help answer my original question. If you have used Crystal Sea Bioassay please offer me feedback.

Variety is the spice of life.

Oh, I'm sorry...I misread your original post. Good Luck with the Nudibranchs.

Sorry to hear about your experience. I've heard rumor that the regular crystal sea mix has been discontinued. I'm sure now that there is good reason for that.

I'd think 3 day's is plenty of time for a fragile critter like that to starve out. I have a yellow watchmen goby that I forgot to feed one day. The next morning I woke up and he was working on swallowing a hermit crab. He left the pistol shrimp alone...but went after the hermit while it was trying to exchange its shell. There is a very good/obvious reason why nudi's are not commonly available...

Has anybody used this stuff long term?... Pros? Cons?

My first suspect would be the maxi-mini. You mentioned that the nudi ate all the flatworms and disappeared...maybe it starved out and was consumed by the other inhabitants.