Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to introduce a pleco to a goldfish tank [title] Ask how large the pleco will grow to be. [step] Although most pet stores will sell plecos that are only a few inches in length, you should know that they can grow quite large. Fully grown plecos can reach up to two feet in length.

Ending1: [title] Check your tank's surface before you place the pleco into the tank. [step] Make sure that your aquarium is opaque or has a drop-down tray so that your pleco is not exposed to water. Ending2: This can have a negative impact on their lifespan. [title] Choose a tank with large walls and no air holes. Ending3: [title] Make sure you cover more than twice the tank. [step] If you find that your pleco grows too much, cover the entire tank with a blanket. Ending4: The exact size of the pleco will vary depending on the species. Ask someone at the pet store how large the pleco will get before making a purchase.

Answer format: ending1/ending2/ending3/ending4