Get that roots organic and mix it with bio-bizz light mix 50/50. Itll have enough in the soil for the forst 3-4 weeks. I use that and do not have to worry about pH, I strictly use roots organic nutes "bought the player pack", I only have to mix my nutes 24 hours in advance for the pH to self regulate. I'm sure there are better ways but I find this to be super easy for me. Just my 2¢