Oasis Origins Seed and Clone Double Box, 1.5" x 1.5", 10 per case spl_hgc re-calibrate your meters periodically with

re-calibrate your meters periodically with a 20 ml pack of 1000ppm calibration solution

Replacement Probe for GroChek H19813-6

Delivers an optimized spectrum and high level of photosynthetic active radiation to promote healthy plant growth

the Vortex Powerfan VTS Series offer unsurpassed value

Oasis Origins Seed and Clone Double Box, 1.5" x 1.5", 10 per case spl_hgc re-calibrate your meters periodically withOasis Origins Seed & Clone Double Box makes growing easy. These refill sheets are compatible with standard growing trays such as in the Speed Starter Kit. The Seed & Clone media features a star dibble for use with clones and the option to simply increase the hole size if using seeds. The convenient packaging allows you to use what you need and store the rest for the next crop. Not only that, the consistent media structure of Oasis Origins offers the