Yes, I highly recommend.
I started with the Seachem line, but it got to be a pain with all the bottles (4), dose this then that. With these it was "Easy" just 2 bottles and I had "Good" growth. With all the tanks I had I decided to take the next step and ordered the dry. Why pay for the water and mix it myself.
Plus saved some $'s. DIY EI Liquid Fertilizer