Custom Hydro Promo Codes & Coupons September 2026 — Up to 52% Off

Custom Hydro is a distributor of water soluble fertilizers for hydroponics, fustigation, and foliar sprays from Hydrofarm Hydroponics Equipment, Haifa Chemicals, ICL Specialty Fertilizer, Peter's Professional, and other manufacturers. For commercial growers and organic farmers, Custom Hydro also provides Ferti-Organic OMRI listed organic fertilizers and bio stimulants, Albion Metalosate organic foliar fertilizers, CalPhos soft rock phosphate, and the full range of OMRI listed trace minerals. They offer nationwide shipping. Formulations for bespoke fertilizers. Custom Hydro produce a recently developed biological insect growth regulator (IGR) called azatin O is used to manage a variety of pests that are present in greenhouses and nurseries in their larval stages. Azatin O has a 4-hour REI, is OMRI listed (Organic Materials Resource Institute), and is gentle on beneficial. The active component of Azatin O is included in 175 grams per gallon.