Growers Choice SE 315W CMH 4K Chemicals Here is a waterproof tester

Here is a waterproof tester that offers high accuracy pH

No "product stacking" required

Probe cable length is 6

This interlacing allows for deeper light penetration and a 800 umol min/1000 umol Max light comverage throughout the conopy area

Growers Choice SE 315W CMH 4K Chemicals Here is a waterproof testerGrowers Choice 4k CMH Daylight lamp is the best option for hearty vegetative growth leading to a healthy bloom phase. With a Color Rendering Index of 98 and intense full spectrum the Growers Choice 4k lamp provides near sunlight photon output. This leads to healthier and more robust vegetative growth. Contains precision gasses for enhanced spectral output Generates much less heat than HPS and MH More closely matches sunlight than ANY other lighting