Tank filters are not available in a fresh game of Zoo Tycoon: Marine Mania Expansion Pack (910219)

RESOLUTION

The tank filters will only become available after you play the game for sometime. If the tank filters are not available, you have not played the game long enough. You have to continue playing the game until you build the zoo and add new animals and objects to the zoo.

The tank filters appear after six months in a freeform game. To keep your tanks clean in the meantime, follow these guidelines:

• Build only some tanks in the start of the game to attract guests.
• Assign a marine specialist to every two or three tanks. They will clean the tanks when they become dirty.
• Have only one or two animals in each tank. If there are more animals in the tank, the water in the tank will become dirty very fast.

The tank filters will be available under the Fences section in the freeform game.
This graphic shows the tank filters that are available under the Fences section.

You can also play Marine Mania tutorials to learn how to add tank filters in the game. To play Marine Mania tutorials, follow these steps:

1. Start Zoo Tycoon.
2. Click Play Tutorial and Scenario Game.
3. Click Marine Mania Tutorial 3 - Combined animal exhibits.
4. Click Play.