IntroGro Linkable GROW & BLOOM LED Bars Athena If you want to be

If you want to be more exact then you can buy peroxide test strips online

potassium and trace elements levels during the flowering and fruiting stage

For ventilation systems requiring high pressure

Replaceable Bluelab pH Probe (with BNC connection)

combine with 14000k CFL

IntroGro Linkable GROW & BLOOM LED Bars Athena If you want to beIntroGro LED GROW and BLOOM bars are ideal for all growing stages from propagation to flowering. The sleek design and long lifespan make these a great addition to any grow room. All in one design for ease of use Lifespan: 50,000 hours Grow and Bloom bars for different stages of growth LED Grow Bar LED Bloom Bar 26 watt LED Grow Bar 6500K 85 CRI 0. 13 Amp 54cm Bar Length Water Resistant IP44 comes with 2 metre lead and plug 26 watt LED Bloom Bar 2400K