Apera GroStar GS4-E Replacement pH/EC Combo Electrode GMGP886 These highly reliable CO2 generators

These highly reliable CO2 generators feature powder-coated steel enclosures that resist moisture

since coco is known to “hold” K

120V power cord included

The new EZ-Clone Lo Pro Black has been made from fully recyclable HDPE which is highly chemically resistant and extremely durable

even on smaller size filters

Apera GroStar GS4-E Replacement pH/EC Combo Electrode GMGP886 These highly reliable CO2 generatorsAI58040 GroStar GS4 E replacement pH EC combo electrode Measures pH, conductivity (EC and PPM) and temperature Combo probe built with lithium glass membrane and titanium alloy to ensure high accuracy and durability Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance double junction structure uses blue gel electrolyte without the air bubble 1 year warranty