Fertilizers Advanced Hydroponics pH adjustment pH adjustment Filters and sorting (3) Cancel the filter RecommendedCheapestMost expensiveBestsellersTop rated Advanced Hydroponics pH Up In stock 4,72 € 3,90 € excl. VAT Advanced Hydroponics pH-Down Bloom In stock 6,31 € 5,21 € excl. VAT ShareTweetPin It