What bus stop do I get off on central and what other bus I take to the zoo, is there one to comeback at 6pm. any good info for bus ????

Not sure since I don't live in ABQ. But it is a great zoo.

Public Transit to the BioPark From the Downtown stations (bus and train), you have several options: Walk through downtown to the Zoo--just over 1 mile. Bus 66 or 766 stops at Central & Tingley Drive, just outside the Aquarium & Garden. Bus 66 stops at Central and 10th -- about 8 blocks (1/2 mile) from the Zoo entrance. Bus 53 stops one block from the Zoo entrance. This is from the City of ABQ website https://www.cabq.gov/culturalservices/biopark/about-the-biopark/tickets/directions-and-parking