Page 12 of Worms Way Catalog by Worm's Way, Inc.

choosing an hid lamp metal halide mh hid lamps if it s mostly vegetative growth you re after metal halide lighting is the type of hid lighting you need similar to the sun s rays in spring and summer metal halide lamps produce light which is mostly in the blue range of the light spectrum that s what you need to grow lettuce basil and other leafy greens high-pressure sodium hps if you want to encourage your plants to fruit or flower indoors you ll want to use a high pressure sodium lamp by emitting light from the red-orange region of the spectrum this sort of hid lighting simulates the sun s light in fall plants under a high pressure sodium light think it s time to finish their growing cycles so they make flowers and fruit conversion lamps get the best of both worlds by choosing a conversion lamp this allows you to burn an hps lamp with an mh ballast and vice-versa this is also the only way to have a 600w mh system as there are no 600w mh ballasts available because the conversion process itself takes some energy to accomplish conversion bulbs aren t quite as efficient as regular metal halide or high pressure sodium bulbs but they will give you the best of both worlds with just one light system hid lamp burning position burning positions for all hps and conversion lamps are universal u mh lamps designated h must be used in a horizontal position lamps designated bu must be used base up vertically hid lamp replacement hid lamps will show decreased lumen output with prolonged usage that is not visible to the human eye we recommend replacing your hid lamp every year for optimum performance hortilux hps en lamps are environmental protection agency epa tclp compliant as non-hazardous waste in that they are completely lead free and contain 80 less mercury than standard hps lamps eye environmentally friendly lamps en can usually be disposed of without being recycled check with state laws first which may be more strict than federal law for information on lamp recycling visit www.lamprecycle.org 12 800-274-9676

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