Well you know the numbers though, same stuff is in the bottles just different ratios so it works. They had to release a new product to mimic Lucas it was so popular. Thousands of growers wouldn’t use it if it didn’t work well. I still use Cali magic with it and you can tweak it with silicon and stuff but it works fine alone.Couldn't imagine not using the GRO. There's just a method that works well so it's been stuck to.