The Sentinel CHHC-4 has all of the C02 control features of the CHHC-1 and CPPM-1. It also has the ability to control 3 other devices, a heating device and a humidity device. Records the min and max temperature, humidity and C02 levels.
meters and testing
Sentinel CHHC-4 – All-in-One Total Controller
April 7th, 2010 | grow light girl | 0 comments | Continued
Gift Ideas for Under $50.
As the holidays rapidly approach, here are some gift ideas for your favorite grower for under $50!
The Bluelab Truncheon PPM/EC meter is easy to use and easy to clean.
With its super tough, high quality, fully waterproof design, the Bluelab Truncheon has proven itself for years.
The Control Wizard Soil pH and Moisture Meter lets you perfect your soil.
The Control Wizard Soil pH and Moisture Meter allows you to monitor your pH levels and moisture levels of your soil. Control Wizard Products is offering its accurate pH & moisture meter for soil growers.
Hanna TDS Meters
To succeed with hydroponics, you must provide your plants everything they need in the right balance. Maintaining this balance is essential for optimum plant growth and yield. For this, you should monitor the levels of pH and total dissolved solids (TDS) of the nutrient solution you use with a Hanna TDS meter. Have you ever wondered what all these terms mean? pH is the scale of how acidic or alkaline (basic) a solution is. Organic matter and inorganic salts that have been dissolved in the nutrient solution are indicated by TDS. Using a Hanna TDS meter will give you accurate reading to improve your grow room performance.
