I've again been fiddling around with using tanks as containers for decorations whilst no animals would be placeable in them. The guests always get the negative prestige moodlet from seeing that there's no animals in the tanks. This happened with the gift shop I have made and now a shallow pond made specifically for displaying zone 2-3 depth water plants (about 10-30cm). Is there a way of using a tank for it's hosting abilities, have guests enjoy it to generate prestige but stop the negative prestige from appearing?