PlasticGalaxy
Fish Gatherer
I bought mine from VM Aquatics, they are a little pricy in general, but VM seems to be cheaper than a lot of different shops. Look around and see what best suits yoru tank. I use the large size where my sailfin plec (currently 7") can fit himself comfortably into it without getting himself stuck. When he attains a larger size, I'll upgrade to the XL size. For your shrimp and BNP, I would recommend the large size - a comfortable fit for all of them, with enough wriggle room for them to do their business without trouble.I've currently got wood, rocks and plants and had been toying with getting some of those Pleco caves, but wasn't sure if they'd use them. I'll look at getting some now.
A very few minor instances, where they'd be in the same cave and the sailfin would get himself worked up and shoo them out, but it isn't very often at all that this happens. If he's still for long enough, the shrimp try to climb up his back - which he isn't fond of, either - but he's quick to move away when he's uncomfortable.Have you ever had any issues between your Plecos and Fan shrimp?