2.0 MP LED USB Digital Microscope 10x/300x ph-ec-tds-meters-and-solutions It fits on either the

It fits on either the ONA Gel Pail or ONA Gel Jar (both of which are 4 liters/1 gal)

these fans move air in a coherent horizontal pattern creating a gentle 'racetrack' air flow pattern needed in greenhouses to maximize heat distribution and humidity control by mixing the air

kelp extract

Reduces watering and leaching of nutrients

Easy to Install

2.0 MP LED USB Digital Microscope 10x/300x ph-ec-tds-meters-and-solutions It fits on either theThe 2. 0 Mega Pixel USB LED Digital Microscope is great for identifying pests and diseases on your plants so you can quickly and accurately resolve the problem. This microscope has 10x and 300x magnifications and can also be used to identify individual plant species. Take videos or photos (depending on operating system) with the 2. 0 Mega Pixel camera to catalog and track progress and species. This microscope plugs into your computer using a USB