Ph emergency

HELLO FOLKS, I posted this in indoor growing also but i really need help im using ro water with a ppm of 0 great and a ph of 7. the problem im having is when i add phdown my ppm reading is jumping to 800 please help my babies r not getting any food right now cause scared to add to an already high count been folier feeding for few days now but cant do that forever

I would just use the nutes that the maker recommends for the week they are in and not worry about what ph down does to ppms.

right on man thats what i think im gonna do tomorrow just tryin to get some feedback. i wonder if GH just put out a dirty batch of ph down anything is possible i guess