c.a.p makes great stuff.they make a timer thats timed for one min on and 4 min off its like $75.generally regular tap water is fine.if going hydro especially one as sensitive as aero u must must must have a tds meter.find a nutrient solution that works with your budget and follow the instructions whal testing ph,tds.i test both every day.as for nutes your going to want to find a solution that doesnt have a whole lotts salts and that the solution isnt really thick "it will clog the misters" canna is nice,gh 3 part is cool but has mucho salt" ask around and see what people are using for nutes and how well they work with systems that have misters involved. alsooo im sure when u see one row of misters in a row its because the heads have a 360 deg spray radious.im sure one row with 360 spinners in a simple tote will suffice.