I think because I have such a small colony its more noticeable. I know they eat up the roaches food,the larvae are always congregating on the food. I have probably as many of those beetles as roaches. I did scoop some beetles out and put them in my bioactive crestie tanks.
I May try rinsing some adults off and start a second colony anyway just to be safe. Once the colonies are huge it probably wont matter as much. I have about a hundred or so right now and dont want to lose any..