I also used ff ocean soil when I planted my seedling, and the ph was fine, how ever in aroud 3 weeks I noticed my ph levels keep rising, so I used the hydro ph down very small doses, and after I waterd everything was ok, but when they start to dry a bit the ph levels continue to rise, not sure what the fuck is going on, but if you look at my picks it diddent seem to have much effect on the , they look amazing, any thing I could have done better would be welcomed in your comments