I got two fans, one a 47inch oscillating fan. My other fan is in my other tent cause I moved these two for now as I just cut some clones and needed the room. I feel you bout the mold tho, gonna clean my drain pans and get some more fans in the next 12 hours.
I mean I just mix it all in a 5 gallon bucket. Not really hard and let it sit for 24 hours. Provides better soil penetration and makes it easier for the bugs to do the work.
So seeing as you dont need to water to runoff with organics could I make some nutrient dense water and then water with just water then use the nutrient dense stuff at the end equal to if the whole feed was one.
I have found since I started growing it depends how big you wanna let them get or how easy you make doing daily things. I have 5 and 4 of them are slightly big. It's a lot of lifting if you dont have them in a set place where they dont need to move.