Please help w/ tank setup!

Currently have 40 gal tank with tank topper. One of the gerbils is biting the plastic floor … trying to find a solution.

Thinking of getting rid of the floor altogether, but am concerned about how they would access water bottles that are clipped into the cage topper.

Would wood platforms/bendy bridges be a safe way for them to climb up to the top?

Are there other ways I can get them to drink??

NOTE: this is from the first day I got them. I have since added a good few inches so they could burrow more and LOTS of cardboard because they LOVE to chew.

Currently have 40 gal tank with tank topper. One of the gerbils is biting the plastic floor … trying to find a solution.

Thinking of getting rid of the floor altogether, but am concerned about how they would access water bottles that are clipped into the cage topper.

Would wood platforms/bendy bridges be a safe way for them to climb up to the top?

Are there other ways I can get them to drink??

NOTE: this is from the first day I got them. I have since added a good few inches so they could burrow more and LOTS of cardboard because they LOVE to chew.