That looks good friend, however, it seems like a lot of lime to me. Pro mix # 4 is what? Do you mean Sunshine mix #4? Mix it up and keep us posted on the results. It would be interesting to see how it works for you.
Thanks Creeper, yes it is sunshine #4 my bad. What would be the negative consequences of that much lime? I did mix it up yesterday, however don't plan on using it till mid/end of May. If it is too much lime, anything I can do to balance it?
All you can do is wait, friend. Have you ever tried this recipe before now?
I have not used this exactly, I have used this one before with great results, the only difference is the added azomite and oyster shell.
6.2-6.8 would be better for organic soil.
RO comes out to <10 ppm
Sunshine bag will be 5.5-6. All soilless bags are in this range. It's up to you where you want the end base mix pH to be. Microbes prefer a neutral ph. I feed at a ph of 6.4 using any bagged soliless. There all at 5.5 - 6 right out of the bag.
You will need more lime with R O water. I wouldn't worry, just test the runoff pH and you should be fine.
