AZ Waterproof pH Pen + EC Pen Set + Hygen Probe Care Set NNB1 5 x 6cm approx

5 x 6cm approx

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GrofanTM come in four different sizes including 4"

COB basically means chips on board which are similar to other LED grow lights except the LED chips are placed closely together - giving it the appearance of just one LED chip

AZ Waterproof pH Pen + EC Pen Set + Hygen Probe Care Set NNB1 5 x 6cm approxAZ Waterproof pH Pen + EC Pen Set + Hygen Probe Care Set The AZ Waterproof pH Pen + AZ Waterproof EC Pen + Hygen Probe Care Set has everything you need to start taking accurate pH, conductivity and temperature measurements today! The Hygen care kit will ensure the longevity of your tools so you always get precise readings. AZ Waterproof pH Pen AZ Waterproof pH pens raise the bar in ease of use, reliability, function and price point. Providing a large