We have one of these in a 25 gallon freshwater aquarium. It adds a lot of color and interest to the tank, and the fish love to hide in it. It's easy to clean and has retained its color for over 3 years now.

Pros: Adds beauty to the tank

Cons: none

I had one of these in one of my aquariums. It added a lot of interest to the tank. The fish liked swimming through and also hiding in it.

Pros: Fish like

Cons: none

I had two of these.Diffrent sizes.But over time the paint wore off.They are nice looking.

Pros: Fish like to swim around them

Cons: Paint wears off

My neon tetras loved this little castle. They often were resting underneath it.

Pros: cute

Cons: none