Pay in 4 interest-free payments of $21.75 Learn more
Ships within 48 hours · Estimated delivery Oct 30 - Nov 4
CO2 and light
carbon filters and HVAC equipment
Use water at room temperature for the best result
Spare (Foliar feed or other function)
No extra buttons to push or dials to turn
Bluelab Replacement pH Probe for Guardian, Combo, & pH Meter plant-support CO2 and lightEasy to clean because of its bullet shaped glass bulb. Fully waterproof and less fragile than all glass electrodes because of its tough polypropylene barrel. Gel filled (non refillable) making it maintenance free and a double junction reference providing longer life! Probe Tips All probes are interchangeable between all Bluelab products All probes carry a 6 month warranty Proper hydration of pH probes is vital to maintain wick All pH probes eventually
