No, no cirrculating fan, i only got 2 of those little black fans [one at bottom, one at top] I switch em around though so exhaust is out the top...i dunno why i didnt have it like that in the first place with hot air rising and all lol. As far as nutrients go, i have this Expert Gardener slow release stuff [only thing i could really find in wal-mart, plants section, slim selection in the dead of winter] it is 19-6-12. Little pellets you mix with the soil and its suppose to feed plants up to 6 months. My last grow i used a little bit of it and got pretty good results, could be better though i know