Thought I'd add some information I learned during the Tropical Swamp Forest preview that happened today.
We were able to see what the inside of the dome looked like and can confirm there are only fish species and the Sunda gharials in the exhibit. However, I did hear one of the keepers say that they are planning to introduce more species into the dome over time, with turtles being one of the likely additions. Also apparently frogs have moved into the dome so there will be tadpoles and frogs you may spot (no idea if they introduced them in or they somehow got in). The dome is humid and hot, set to about 28 degrees Celsius, and you can feel it if you stay in the dome for even more than a minute. However, the cool draft that enters (during cooler days of course) when the sliding doors open, will hopefully keep guests cool enough when going through the dome. The gharials have plenty of aquatic space and Sumpit, the smaller of the two gharials, is definitely more active compared to her sister. One thing I will say is the bottom of the tanks are quite bare and there aren't really any aquatic plant species in the tank although I'm not sure if that's the case in their natural habitat.
I also learned two other interesting things during my time at the zoo today.
1. The otters have been moved out of their new habitat after about a week as they tried to escape their new enclosure. They tried to escape up the walls and even through a drain pipe so they're fixing these problems before introducing them back in.
2. The zoo is also starting to cohabitate the orangutans and siamangs. There haven't been any strong positive or negative interactions so far with the two species keeping their distance from each other but at least they're starting to integrate the two species together to share the habitats.