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colloids will wrap around soil particles and release as soil bacteria dictate
Hydroponics and soil liquid pH adjuster
Suitable for open fixtures
The Merlin Garden Pro will deal with up to 98% of microorganisms
and penetrate deeper into the canopy without being obstructed by the lamp itself
HM Digital Replacement pH Sensor for PH-200 Environmental Controllers colloids will wrap around soilThis spare pH sensor is for HM Digital Waterproof pH Meter model P 200. Features glass pH sensor and reference tube and thermister.
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