In-Stock! pH Meters | Pens | Monitors at GARDEN SUPPLY GUYS

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6 Products

-34%

Hanna Instruments

HANNA® GroLine Hydroponics pH Tester

Only 1 left

Regular price $59.00

Regular price ~~$89.99~~ Sale price $59.00
-35%

Hanna Instruments

HANNA® GroLine Waterproof Hydroponic pH Tester

Only 3 left

4 reviews

Regular price $85.00

Regular price ~~$129.99~~ Sale price $85.00
-26%

HM Digital

HM Digital® pH 80 Hydroponics Water Meter

In stock

1 review

Regular price $44.50

Regular price ~~$59.99~~ Sale price $44.50
-16%

Hanna Instruments

HANNA® GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

Only 2 left

1 review

Regular price $209.00

Regular price ~~$249.99~~ Sale price $209.00
-14%

Hanna Instruments

HANNA® GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter

Only 1 left

Regular price $279.00

Regular price ~~$325.00~~ Sale price $279.00
-6%

Hanna Instruments

HANNA® GroLine Hydroponic Monitor for pH, EC, TDS, Temperature

Only 1 left

Regular price $495.00

Regular price ~~$525.00~~ Sale price $495.00

works well and is economical

use coco loc and fish **** so I try to avoid phosphoric acid "based" products to preserve all those microbes

A+ 5 stars

Great product and company.

All around great product and company.

Package was on time. Great service.

No question!

I don’t even consider any others. It gently adds to the plant’s nutritional needs at a crucial time! Why mess with your babies?
I be used for years! Good stuff friends!

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Category: pH Meters | Pens | Monitors

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HANNA® GroLine Hydroponics pH Tester

HANNA® GroLine Waterproof Hydroponic pH Tester

HM Digital® pH 80 Hydroponics Water Meter

HANNA® GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

HANNA® GroLine Hydroponic Waterproof pH/EC/TDS/Temperature Portable Meter

HANNA® GroLine Hydroponic Monitor for pH, EC, TDS, Temperature

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