root mass

Recently went to an R.O system and my root mass has deminished severely. Wondering if anyone has tips of how to increase root mass. Plants are happy but I'm not impressed with the roots. I used house n garden line including roots excel. What's your best nutrient for root mass. And what's the...

I consider myself a newbie and have so much to learn. I appreciate all the experts with experience on this site who are willing to share. Does root growth change during the flowering cycle or does it continue to grow to container capacity?[/ I have my plants in 7 gallon Smart Pots and went...