Pfeffersack
Deity
Nice buttons, as always 
That was my reaction as well, when I discovered how late they enter the game now. It just does not feel right - Recycling Tanks feel like something I should get when researching the Recycling tech
I wonder, if it would be possible to bring back the old SMAC effect of increasing the base tile output (was 1/1/1) or maybe something related to the size of a base? 0,1 of each tile yield per citizien? Or give the Recycling Tank a special use when running EB...

By the way, the current recycling tanks... are very late in the tech tree and effect-wise, I don't think they fit very well. Perhaps you could rename them to "Sky Hydroponics Lab" - fits the effect and the enclosed theme very well, in my opinion.
That was my reaction as well, when I discovered how late they enter the game now. It just does not feel right - Recycling Tanks feel like something I should get when researching the Recycling tech
