Bluelab pH Pen | Waterproof pH & Temperature Meter, 0.0-14.0 pH Humidity & Storage never dry and never in

never dry and never in plain water

Advanced Nutrients Sensi Cal-Mag Xtra is a concentrated 4-0-0 supplement designed to add calcium and magnesium to nutrient programs where these elements may be under-supplied—especially in hydroponic

Spend less time mixing nutrients with value added 2-in-1 and even 5-in-1 product formulations

Bound into tissue within 24 hours of uptake: Silicon deposits into cell walls and stays there

No Indicator Cards: Nothing on a packet reads its state

Bluelab pH Pen | Waterproof pH & Temperature Meter, 0.0-14.0 pH Humidity & Storage never dry and never inWhat the Bluelab pH Pen Reads and How Accurately A pH reading that drifts is worse than no reading, because you feed on it. This pen covers 0. 0 to 14. 0 pH at 0. 1 resolution and holds 0. 1 pH accuracy at 25C. A double junction probe does the work. It also reads solution temperature across 0 50C 32 122F and compensates automatically, so a cold reservoir at lights on does not throw the number. The body is fully waterproof and the LCD is backlit for a