Honestly it one of those " if you have to ask" questions.

How about a simple indoor soil grow? Why invest in something you dont really know about? A soil grow is a very cost effective and great yielding way to go. Easy to manage and wont get you down.

Growing in soil you have a buffer when you are learning to care for a plants needs with the soil. DWC and aero both require knowledge and a costly setup to pull off correctly.
Very worth it if you can manage it, otherwise a waste of time.

16 1-2 foot plants? I would reccomend more like 6 to about 48". In soil.

Bugs outside are fairly easy to manage. and ec and ppm are 2 completely different ways of measuring kinda the same thing. Think you will be ok with a ph meter and ppm pen to start out.
Bloomin Idiot Reviewed by Bloomin Idiot on . New to Hydro-Startup Questions I am tired of dealing with termites on my plants growing outside. I am starting clones in Rockwool today for a small hydro system. Should I do DWC or aerophonics? Will I need to purchase all three PH, EC and PPM meter? It seem that you can convert EC readings to PPM. I have a 600 watt HPS/MH light, planning on trying 16 plants, in a 30" X 60" closet. Should I drop the number of plants down. Rating: 5