Fertilizers Advanced Hydroponics pH adjustment pH adjustment Filters and sorting (3) Cancel the filter RecommendedCheapestMost expensiveBestsellersTop rated Advanced Hydroponics pH Up In stock 4,71 € 3,89 € excl. VAT Advanced Hydroponics pH-Down Bloom In stock 6,29 € 5,20 € excl. VAT ShareTweetPin It