I like this setup, too -- I don't like the 10 x 12 because it's SOOO high. And, mainly I use my GH for seedlings in the spring. It would actually be great to have one 6x8 that I could heat in the early spring for the seedlings, and then as things warm up spread the plants out between the two units. (I presently have an 8x16 Rion that is getting near the end of life). Really got me thinking now, Carol!