All my shrimp are gone?

[chaostactics]

Except for my pistol shrimp. 

 

I have an IM 30 that's topped off with RO, gets a water change every three weeks, filtration via tunze 9004, intank media rack converted to refugium. 

 

I had a cleaner, 2 sexy shrimp, 2 peppermint, and a glass anem shrimp. Everyone was fine until the hurricane, I lost 1 sexy shrimp after 7 hour outtage. Everything else was fine. Over the last 2 months the 2nd sexy, 2 peppermint, cleaner, and glass anem shrimp are all gone. 

 

Only recent addition is a small royal gramma. 

Residents: high bar goby/.5 peppermint pistol, trip of 3 small ocillaris, green emerald crab, non-anem hosting porcelain crab, 2-3" bta. Misc hermits, snails, fighting conch. All had been in the tank with all the shrimp (save the gramma) for at least 3 months. 

 

Don't get what gives? 

I've never seen a bristle work in the tank, no hydroids, aphasia, etc. 

 

Feeding 3 x a week. Clean the skimmer the same. 

[Christopher Marks]

1 hour ago, chaostactics said:

Except for my pistol shrimp.