Emerald Harvest pH Up, 1 qt, case of 12

Alkaline Buffer for Raising Nutrient Solution pH, 1 Qt

Emerald Harvest pH Up is an alkaline buffer designed to raise the pH of hydroponic nutrient solutions that have dropped below the optimal 5.5-6.5 range. Low pH limits the availability of calcium, magnesium, and phosphorus, leading to visible deficiency symptoms over time if left uncorrected. Formulated as a weak base, pH Up provides controlled adjustment that's easy to manage in any hydroponic or substrate-based system. Keeping the solution in the proper pH window ensures the nutrients already present stay accessible to plant roots.

A grower tending a small reservoir or a handful of containers typically reaches for the 1-quart size to keep pH corrected. Sold as a case of 12.

Key Features & Benefits

• Corrects low pH precisely — brings acidic nutrient solutions up into the 5.5-6.5 target range where nutrient availability is maximized.
• Weak base formulation — controlled alkaline buffer allows gradual pH correction without overcorrection or instability.
• Reopens locked-out nutrients — low pH locks out calcium, magnesium, and phosphorus; pH Up corrects conditions to make them accessible again.
• Supports beneficial bacteria — stable pH promotes thriving populations of beneficial microorganisms in the root zone.
• Works across growing media — suited to hydroponic reservoirs, coco coir, soil, and other common substrates.

Who Should Use pH Up

pH Up fits growers using naturally acidic water sources or feeding solutions that drift low over time, including hydroponic, coco, and soil setups. It pairs with Emerald Harvest pH Down for complete two-way pH management.

About Emerald Harvest pH Up

Emerald Harvest built pH Up around a single job — correcting low pH — instead of folding adjustment into a multi-function additive, so it layers cleanly onto whatever base nutrient program a grower is already running.

Frequently Asked Questions

What pH range should hydroponic growers target?

Most hydroponic and soilless nutrient programs aim for a pH window of about 5.5 to 6.5, the range where the widest spread of nutrients stays available for root uptake. pH Up nudges a low-drifting solution back up into that window.

How much pH Up should I add per reservoir change?

Add small amounts at a time and re-test between each addition, since it's a weak base meant for gradual correction rather than one large dose. Start from the label's suggested dosing rate, then fine-tune based on what your meter reads.

What deficiencies show up when pH drops too low?

Low pH restricts the availability of calcium, magnesium, and phosphorus, even when those nutrients are already present in the reservoir. Correcting pH with pH Up restores plant access to nutrients already in the feeding solution rather than requiring additional fertilizer.

Can pH Up be used in soil as well as hydroponic systems?

Yes, pH Up works across hydroponic reservoirs, coco coir, soil, and other common substrate types, not just recirculating systems. Start from the same label dose regardless of medium, then verify the outcome with a pH meter.

When should pH be rechecked after a correction?

Test again at the next reservoir change, and more often if your source water is known to drift acidic between changes. Soilless and hydroponic setups generally need closer pH monitoring than a buffered soil mix.