... substance HPS & MH have, much less hazardous waste to deal with.8) Each light covers at least 6 to 9 square ... ) Ideal for all phases of plant growth, and works well with any indoor garden, whether hydroponics or soil based.10) Different ... for the details. Application:Suitable for the plant -breeding house, garden, farm, green house, horticultural park etc, which need the sufficient light, it ...