this is my first time using rock wool for seeds. does anyone really bring the PH to 5.5 like the rock wool directions really say? this would be used for soil grow. not hydroponics. thank you
anbesol Reviewed by anbesol on . ROCK WOOL SEEDING HELP this is my first time using rock wool for seeds. does anyone really bring the PH to 5.5 like the rock wool directions really say? this would be used for soil grow. not hydroponics. thank you Rating: 5