boxing crab

I got a female Pom Pom Crab a few months ago, and recently decided I would attempt to get her a mate. I know her to be a female because she laid eggs last week (and has since released them). I ordered two more Pom Pom Crabs hoping to get at least one male, and received them yesterday. I thought...

10 gallon Aqueon tank with a 5 gallon drum cut to about 10.25" length to act as a kreisel, sealed with silicone cured for 48 hours. Two windows that are 120 micron nylon mesh of about 4" by 3". Adjustable submersible pump/filter hybrid connected with two feet of 1/2" inner diameter silicone...