Just received my beautiful Randalli pistol shrimp, done acclimating and put him in my 29. Hopefully he'll pair with my tiny orange spotted goby. On average how long would it take to pair? Are we talking days or months if at all.
Being honest, your sandbed is not deep enough to support a burrowing critter....you should really have about 4 or so inches, and the subtrate of mixed fine and medium grade sand to allow the shrimp to burrow and build a tunnel complex...also, just keep a watchfull eye on the rock which is resting on the sand...the potential for collapse is there...
Good luck....
Does a sand bed that deep require a plenum? Also, if setting the rock on the aquarium bottom would you recommend any cushioning between the rocks and the glass/acrylic?

