General Hydroponics pH Test Indicator - 8 fl oz

Check Nutrient Solution pH with Drops and a Color Chart - 8 fl oz Bottle

Nutrient solution that drifts out of range can limit how well plants take up what they need. This liquid indicator gives you a quick visual check: add a few drops to a sample of your solution, compare the color to the included chart, and decide whether to adjust. It reads across a range of 4.0 to 8.5, which covers the 5.5 to 6.5 range commonly targeted for plants.

The 8 fl oz bottle suits hobbyists and regular indoor growers who test their reservoirs often. Because the indicator is concentrated, you add only a few drops per test.

Key Features & Benefits

• Concentrated liquid indicator — a few drops per test keeps each check simple.
• Included color chart — you compare the sample color directly, with no batteries or calibration.
• pH test range of 4.0 to 8.5 — shows readings well above and below the target zone.
• Guides adjustments — results tell you whether to add pH Up or pH Down, sold separately.

Who Should Use General Hydroponics pH Test Indicator

Home gardeners and growers running hydroponic systems who want a straightforward way to monitor nutrient solution pH. It also works as a low-cost backup check alongside an electronic meter.

About General Hydroponics pH Test Indicator

General Hydroponics makes nutrients and solution-adjustment products for hydroponic cultivation. This indicator comes in an 8 fl oz bottle with a color chart and is sold individually.

Frequently Asked Questions

Q: What pH range should I aim for?
A: The manufacturer lists an ideal range of 5.5 to 6.5 for plants. Test your solution and adjust if the color falls outside that range.

Q: How do I use the indicator?
A: Add a few drops to a sample of your nutrient solution. Compare the resulting color to the included chart to read the pH.

Q: What range does it measure?
A: It tests from 4.0 to 8.5. That covers the target zone and readings on either side.

Q: How do I fix a reading that is off?
A: Add pH Up or pH Down, sold separately, then test again. Make small adjustments and retest before adding more.

Q: How does a liquid indicator compare with an electronic meter?
A: A liquid indicator relies on color comparison and needs no calibration or power. A meter gives a numeric reading but needs upkeep. Many growers use both.