Top 3 Best Ph for Growing Weed in Hydroponics Posted on October 18, 2026 By Maggie Poissant No Comments on Top 3 Best Ph for Growing Weed in Hydroponics Review Unlock explosive cannabis growth and maximum potency by mastering the critical 5.5–6.5 pH sweet spot for hydroponics. We tested the top systems and media so you can skip the guesswork and harvest with confidence.