Hobby pH Pen Size:Grow Gadgets pH Pen accredited by SKAL and ECO

accredited by SKAL and ECO

Waterproofing: waterproof inner with removable spill tray

DWC and RDWC buckets

Plug lights directly into a mechanical or digital timer and the ignition surge from an HID ballast quickly pits and welds the timer's internal contacts

Webbing and stippled leaves taking over the canopy

Hobby pH Pen Size:Grow Gadgets pH Pen accredited by SKAL and ECOGet pH right before nutrients ever reach the roots The Grow Gadgets Hobby pH Pen is a simple, no fuss meter for checking the pH of your nutrient mix before it goes anywhere near your plants. Entry level it may be, but it still holds to 0. 1 accuracy close enough to catch the swings that cause real problems in soil, coco and hydro reservoirs alike. Dip, read, adjust, and you feed with confidence instead of hoping the mix is in range. Yellowing leaves