PH, EC, TDS Meters and Solutions

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General Hydroponics PRO pH Down 6 gal

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MSRP:

Was:

Now: $373.13
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General Hydroponics PRO pH Up 55 gal

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MSRP:

Was: $2,583.47

Now: $2,200.00
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General Hydroponics PRO pH Up 6 gal

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Was:

Now: (Inc. Tax)

MSRP:

Was:

Now: $373.13
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GroStar GS2-E replacement Soil Spear pH electrode

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MSRP:

Was: $181.99

Now: $160.00
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GroStar GS4-E replacement pH/EC combo electrode

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MSRP:

Was: $79.99

Now: $71.99
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GroStar GS3-E replacement EC electrode

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Now: $53.99
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GroStar GS1-E replacement pH electrode

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Was:

Now: $50.99
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HM Digital Hydromaster Replacement EC/TDS Probe

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Now: $49.99
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TrolMaster Heavy Duty Nutrient EC+Temp Sensor, drop-in/in-line compatible

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Was: $241.50

Now: $229.43
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TrolMaster Heavy Duty Nutrient pH Sensor, drop-in/in-line compatible

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MSRP:

Was: $219.45

Now: $208.48
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TrolMaster Inline pH Sensor, Heavy Duty (PPH-2)

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MSRP:

Was: $197.40

Now: $187.53
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TrolMaster Inline EC Sensor, Heavy Duty (PCT-2)

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Was:

Now: (Inc. Tax)

MSRP:

Was: $219.45

Now: $208.48