I just posted about this with the same problem. I've been waiting more or less since sometime in November for tubs to come back in stock. My search for alternative tubs was unsuccessful. I couldn't find anything that would leave less than a 1/4'' gap, which is too large imo. For most BPs they shouldn't be able to get out but holding humidity will become an issue plus if I ever want to house something smaller, I can't. I emailed reptilebasics and they said that they'll be in stock any day and shipping delays being the cause. I hope that's truly the case.