Please choose the correct ending to complete the given sentence: Health: [header] How to grow houseplants with grow lights [title] Choose the appropriate type of grow lights. [step] There are 3 types of bulbs that work well as grow lights: metal halide, high pressure sodium (hps), and fluorescent. Each type of light fixture has its own advantages and drawbacks.

Ending1: Metal halide, on the other hand, is ideal for growing plants with fluctuating light levels. [title] Decide when to grow your plants in full-sunlight. Ending2: Lights for plants must be positioned in a manner that is conducive to growth, which means to increase the light quality and regular strength of the bulbs used. [substeps] Aquarium lights utilize uva or uvb radiation so that these lights can penetrate the light generated by fish, animals, and plants. Ending3: [substeps] Metal halide bulbs are compact and efficient, producing a very intense light from a small bulb. These bulbs are rich in blue wavelengths of light, which helps encourage leafy growth in plants. Ending4: For the main advantages, you can plant seeds in your grow lights. The main drawbacks are that you'll have to wait a couple weeks for the bulbs to grow, which can make the sprouting process take a lot longer.

Answer format: ending1/ending2/ending3/ending4