By using smaller wattage HQI bulbs (20K) nested between the larger wattage primary HQI bulbs (10K) dramatic gains in color mixing and depth of punch are achieved. Do you want your dawn and dusk lighting periods to dance? Enjoy, for the first time, the magical shimmer lines you get from your daylights, now gracing your morning and evening blue effects. For those taking advantage of all the new mid-Kelvin HQI offerings by forgoing a mix of bulbs colors, instead running a single bulb color across the entire system, the 4’ 2x250 and 6’ 4x250 systems offer ideal alternatives to a row of pendants. The Oceanlight Metal Halide Combos now include our Oceanballast M magnetic ballasts, bulbs (3 x 150W 10,000K and 2 x 70W 20,000K), and hanging kit.