I think if I have problems finding the tubs (like I am now), I could probably just make them. I've been looking up how to make aquariums, and I figure making slide out rack-quariums wouldn't be too different. Not to mention, I could make them whatever sizes I'd need. I think as long as I got the right materials and put a handle on them so I could pull them in and out, I could do it.

I love building things - I have a lot of time, so we'll see.