tupperware? probably not more than a day or two tops...if you can keep the temp stable. For longer periods you should get a rubbermaid container, add heater, lights and flow and bam you've got an opaque tank I've seen people keep their stuff in rubbermaid for months.
right on thats what I thought.... i ment to say rubbermaid. I put my power heads, chiller, heater, no light but it only has to last tell the floor drys, which it will be by tomorrow after work.