Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to culture microworms [title] Find a microworm starter culture. [step] Because these worms don't lay eggs, you will need a few live adult microworms to start your culture. Remember that not all nematode species are a good food source, and some may even make your fish sick.

Ending1: If you don't feed your fish live organisms, you may have to make a vegetarian or plant-based culture. [title] Get your aquarium water and weather conditions in mind. Ending2: If you can find a microworm starter culture, you can work out the right approach. [substeps] A frozen batch of frozen worms is best, but you can also purchase an over-the-counter worm starter at your local pet store or online. Ending3: [substeps] If your local fish store sells live food, check for microworms there. Try getting in touch with other local hobbyists through aquarist clubs. Ending4: [title] Buy a fast moving microworm tank. [step] The quicker you start getting to know the microworms, the easier it will be for them to grow.

Answer format: ending1/ending2/ending3/ending4