yeah you should ALWAYS have 10% runoff when you water. And every 2 or 3 weeks its good to flush HARD with a light nute soultion. (if u have 14 4 gallon pots then you will need 112 gallons of water to properly flush them all) You always need to ph you water. keeping it at 6.5 is a good start, but i find i like to let it drift from around 5.8 - 6.7 and back down over 3 or four waterings
To anyone who says SOG is same yield less work. thats straight bullshit. Unless you have an irrigation setup SOG is plain more work. So without running a hydro setup or drip setup, you need to take every pot out and feel if it needs to be watered 2 or 3 times a day if you want to properly not under/over water.
Me... i have 6 plants in 20 square feet, yes it did take a little longer, but that is what my veg area is for. If i did SOG my Veg area would be empty half of the time. Meaning SOG equals more plants, more pots to check if they need water, less use of vertical space in my area. Plain and simple SOG is too much work without an irrigation setup.
SOG is worthy if you have 2 or 3 times the amount of floswering space as veg space, and personally i would only do it if i were growing hydroponically(way easier in my opoin)
side note: Only when i did my DWC hydro experiment, could i spend 20 minutes adding water/nutes/ph down(usually) and the forget about the fucker for literally a week, come back to 3 or four inches growth, and no damage of any kind... Only problem with Hydro is not many strains strains/phenos will work perfectcly together in the same system.