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The replaceable 19 Watt LED tubes DAY and NATURE produce an optimal light spectrum with a simultaneous energy saving of up to 50% compared to T5
Easy access - clip open - outer strainer cage
UVC replacement bulbs
2 fully adjustable outlets
Can run 'dry' or submersed in water
Colombo GH Plus Tropical Aquariums The replaceable 19 Watt LEDColombo GH+ increases the total hardness of the pond water. GH stands for total hardness and is the measurement of the total amount of dissolved minerals within the pond water; these minerals mainly consist of Calcium. A correct total hardness or GH is essential for the well being of your fish and plants as plants and fish need these minerals for their health and growth. An ideal GH value should be between 10 and 15DH. When the optimal GH value is