i usually feed every other watering. water with plain water in between.
you need to give the plants time to metabolize the nutrients you are giving them. if you give ferts too often you can nute burn you plants, and then you have to flush and flush to try and get them healthy again. a little less nutes is always better. it's way easier to give more than take away.
Thanks dude.now I use a better quality 3-1-3 nute and feed every second watering(two days)...