Temperature affects the growth rate and structure of a plant so a solution temperature of 18 - 22?. C or 65 - 72?. Plants get their nutrient from minerals but they can only get all the right minerals they need if certain conditions are right.
eBay
Ideal for all water purification applications, wastewater regulation, aquaculture and hydroponics. 1 x PH test pen. - Advanced microprocessor technology allows you test the water. - Portable unit - includes a carrying case with belt clip.
eBay
Red backlight = non-drinkable warning (>50 ppm), green backlight = directly drinkable (<50 ppm). 【Multipurpose Tds Tester】 Test the purity of drinking water to ensure it's safe and healthy, monitor if Reverse Osmosis (RO)/Deionization(DI) System works properly, whether filter need replaced, maintenance aquarium, hydroponics(test nutrients), well, pool, hot tub, spa and testing tap water, bottle water etc.
eBay
Water Pocket Hardness Purity Test Pen With Backlight. Accuracy: 0.01PH. Error: ± 0.1PH. Screen display: High definition backlight.
eBay
Small and lightweight, it is ideal for any grow room. The LCD dual display shows pH and temperature readings.
eBay
The Bluelab Combo Meter is a versatile all-in-one tool for measuring pH, EC, PPM, and temperature in hydroponics systems. This portable meter from Bluelab features thermal measuring technology and is made of durable plastic material. With the ability to display measurements in both Celsius and Fahrenheit, this meter is designed for easy use in various hydroponic setups. The Bluelab METCOM model offers combined readings for pH, EC, and temperature, making it a convenient and practical choice for maintaining optimal growing conditions.
eBay
Unique Display Settings: Choose from PPM, PPT, or % to suit your testing needs with ranges such as Swimming Pool Salt : 0-9999ppm; Seawater : 10-200ppt; Food : 0.01-25%. Wide Application: Perfect for monitoring salt levels in pools, aquariums, Koi fish habitats, and seawater systems.
eBay
TDS&EC Tester. Conversion between TDS and conductivity. Type: PH Tester. Can be used for: water purifiers and filters, food (vegetables, fruits) and beverage quality monitoring, swimming pools and spas, aquariums, hydroponics.
eBay