I'd get rid of the wheel, as those are known to break tails or even dislocate hips/shatter femurs. Get a solid bottom wheel or a Senior Wodent Wheel(search online.

Also, that food is junk. There is nothing in there that is even close to what they need nutrition-wise, and their health will suffer for it. Read the recipe I posted in the feeder section under "Becky's Mix". It is much cheaper and nutritionally balanced. Also, I wouldn't get the lab blocks sold in pet stores. They generally have ethoxyquin in them as a preservative, which is known to cause cancer. Purina Mazuri blocks(6F) can be found at any Purina mill(feed store). Or you can search online and have some Harlan Teklad blocks shipped to you(2014 or 2016).

If you can, get them a decent powder-coated wire cage(Super Pet cages are ok, just watch for bar spacing) One with a few levels would be ideal. Tanks just don't have adequate ventilation unless there is only one rat in them(about to birth or raising babies) for a short time. It wreaks havoc on their lungs and they can get scarring from the ammonia build up.

Good luck with them and watch out for breathing issues. They may sneeze more than normal(which is ok), but if it gets any worse such as they have porphyrin crusting around their eyes/nose, their breathing is labored, sides sunken in, or they are open-mouth breathing, they need to see a vet immediately.