Advanced Nutrients PH Perfekt

You definitely need to fine-tune things. The right pH value varies between soil and hydro, and also depends on the growth stage. It shouldn't be set too firmly on one value, as the availability of nutrients changes depending on the value; calcium and magnesium are better absorbed at the higher end, while others are more available at the lower end. Google "pH nutrient chart soil or hydro," depending on what you're using, and then let it drift within that range. With the pH perfect products, it also stabilizes better if you follow a feeding schedule, but then an osmosis system becomes essential; otherwise, the EC ends up being too high and the pH value will be off too. The order of mixing also matters; the correct sequence is: silicate, base nutrients, then calmag, and then the other additives. When adjusting, don't add phosphoric acid directly. You can dilute it with water, scoop some out, then add your diluted pH-/+ back into the nutrient solution; otherwise, you might get unwanted reactions. With concentrated pH-/+, you can easily overshoot your target.