Yeah, space, and electrical bill (saved me $30+ this month). I moved everything outside.
250 sump (pond) 275 gal fish tank and 4x75 gallon 12" deep grow beds.
Its still under construction, trying to figure out the auto siphons.
I'm learning about 2 new ways of growing veggies right now: growing in mulch and wicked beds. growing in mulch seems so easy. A friend of mine does it and he has beautiful lettuce, sprouts, Kale,... and much more growing, nights here were below freezing for 2 weeks now. He said in the morning it looks dead, but from the moment the leaves defrost, it is nice and lush again.
Here is a video about mulch gardening: Back to Eden