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Measures pH and temperature
fully waterproof design
Compatible for use with 5-gallon buckets or tubs
blocks dust and other contaminants from entering filter
Ushio AHS-DE 1000 Opti Red Growers Edge Measures pH and temperatureSuper High Pressure Sodium Double Ended lamp for Plant Growth. High red and blue spectral ratios for good photosynthesis efficiency. Great lumen output for high PAR values. Robust plants through high blue light output. High red light ratio for healthy plant growth. Economic (long average life, high lumen output, low energy consumption). Tubular low profile design for compact fixtures. The jacket of this double ended lamp is made from quartz glass. Do