I use a bagless clean from Bissell since my tank is only 20 gallon glass with 112 females n 38 males in there currently,when I collect all the roach babies every weeks or sooner,I vacuum all the waste out,and this really take me about 30 min or longer,if I can eliminate this cleaning process ,then I can spend more time on my other pets.Do you use a shop vac type vacuum? Because that's brilliant (as long as all the good guys are out of the way!)