Pay in 4 interest-free payments of $38.50 Learn more
Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
away from extremes of hot and cold
agitate well until dissolved
Trend Chart: shows variable Min/Hr/Day/Wk for readings of CO2/RH/Temperature
which enhances the timeless formula with nutrition from the sea
In systems using reverse osmosis (RO) water and plants grown in inert media
Apera GroStar GS4 pH/EC Combo Pen Titan Controls away from extremes of hotAI21040 GroStar GS4 pH EC 500ppm 700ppm & Temp (5 in 1) Combo Pen Lab grade instruments designed specifically for growers! Includes: 2 year warranty (instrument) 1 year warranty (probe) pH 7 & pH4 calibration solution (50ml bottle each) 2. 77 EC calibration solution (50ml bottle) KCL storage solution (10ml bottle) Lanyard and user manual Features: Measures pH, conductivity (EC and 500ppm 700ppm) and temperature (5 in 1) Compatible with all GroStar
US$ 36.00
US$ 100.50
US$ 69.99
US$ 28.99
US$ 26.00
![Metang (35/108) (Stamped) [EX: Power Keepers] Duel](https://cdn.shopify.com/s/files/1/0731/7556/4598/products/d409a0a7-6f98-596e-8f06-aee48d9a4fce_21aaadcb-b1a6-4803-8578-5cd17f7f7c88.jpg?v=1696283190)