New to soil. I've been growing hydro. I'm just testing so I mixed up 50% Peat Moss 25% Perlite, 25% Vermiculite. Mixed nutes to 500 ppm and nutes dropped ph to 6.2. So I poured over the mix, and got a ph of 3.9 to 4.0. PPM was 520. So to get my runoff to about 6.3 to 6.5, do I want want to raise my nutes to around 7.8 ph to get the 6.5? Thanks