I highly recommend Pure blend nutes from Botanicare.
All in one grow and bloom formulas.
Very clean leaving very little salt build up.
You mix 1oz per gallon and your'e done.
In addition,
A little H2o2 as directed always helps with root aeration,
along with a dose of clearex every couple of reservoir changes to help prevent lockout.
I also add SM90 or spray with Serrenade to prevent mold and other disease.
Watch out with the SM90 as although it smells better than some of the
other bacteria based solutions, and is very effective it does not work well in conjunction as it tendds to kill everything including the friendly bacteria.
Use one or the other.
The SM90 is an excellent preventative foliar spray as well but should really only be applied a few times as it creates a protective film that can prevent absorption of other beneficial foliar applied nutes.
Again, Serrenade is an excellent alternative and can be used pretty much whenever just not in conjunction with the SM90.