Just wanna make sure I’m doing this correctly

Hi, hey I think you're making a good choice for your soil. Actually, I use about 8 parts Pro Mix + HP w/Mycorrhizae to 2 parts Happy Frog, and spike it with like 1-2 parts Ocean Forest. Reason being is the ocean forest is a little hot. My ph was a little high, but using Advanced Nutrients ph perfect base nutrients, I never had a problem. Just be careful not to mix it to hot so you don't burn your young roots. I just love the mix because I get the Mycorrhizae in the high porosity pro mix for the roots, the nutritional benefits of the happy frog and fish products in the ocean forest For a boost. For a long time, I only mixed the pro mix and happy frog, but when I seen what an associates crop looked like with about 15% ocean forest in the mix, I started including it in my substrate concoction as well.😉 So, to make it simple, imo anyhow, about 60/40 pro mix, and the Fox Farm products leaning a little lighter on the ocean forest than the happy frog. Hope this gives you some ideas. Happy growing!☺️✌️

Tbh you may run into ph issues as fox farm is ph balanced in the mid 6’s while pro mix is ph balanced to 5.9. I would personally just choose either pro mix or foxfarm instead of mixing them. Hope this helps. Good luck.