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584 blocks The Grodan PAR10 Block 4 x 4 x 4 in with Hole is an industry-leading rockwool growing medium
ensuring the nutrient delivery system remains within the target range
For best results once diluted
and it is a measure of oxygen rather than of container size
store sealed containers between 45–85°F (7–29°C) and use within one year of opening
Aranet CO2 and Temperature Sensor | 0-9999 ppm Wireless PRO Triminator 584 blocks The Grodan PAR10Aranet PRO CO2 Sensor for Wireless Monitoring The Aranet PRO sensor pairs to an Aranet PRO base station over the Sub GHz US920 band. CO2 reads from 0 9999 ppm at (30 ppm + 3%), and temperature reads 0 50C at 0. 3C. It also logs atmospheric pressure from 300 1100 hPa. An IP67 ASA plastic enclosure lets it ride out the humidity of a working grow room. Wireless CO2 Sensor for Greenhouse and Grow Rooms Line of sight radio reaches up to 3 km, so one base
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