I just got 200 blatta lateralis and want to get a colony going capable of serving as the staple for a pair of panther chams. I have them in a 20 gallon long. Will that be big enough? Keep in mind that by staple I mean about 30% of the diet. I like to provide a lot of variety including silkworms, hornworms, mantids, waxworms, crickets, and zophobas. Basically, I want the roaches to replace crickets as the primary foodsource.