Active Air CO2 Test Kit microbial fertilizer a 1 inch gap or

a 1 inch gap or greater must be present between the top of the fixture and the surface it is mounted under to enable adequate air flow

This item is a 50' roll

Rounding out these systems is your choice of the PHRW010 (Open) Reflector or PHRS010 (Enclosed) Reflector and a premium European-made DE lamp with rated PAR output of 2100 µmol/s

Doesn’t smell bad

CO2 and lighting

Active Air CO2 Test Kit microbial fertilizer a 1 inch gap orWe recommend measuring CO2 periodically to ensure optimum levels for growth. The Active Air CO2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper CO2 level, as well as eliminate waste and optimize growth. The kit is inexpensive and easy to use, and includes instructions.