Just a few questions, new at vivariums. :)

[DonLisk]

Hey Mitch, Nice tank.

Since your doing Dart Frogs, you need not ventilate the tank what so ever. Daily opening of the tank to feed would be more than enough for darts. Never used that top so I am not sure how hard it is going to be to keep the fruit flies from escaping.

You can use your gravel as the drainage layer and for making the pond. Using a piece or plexi will be fine but your silicone might not be ready by the weekend since the smell will be lingering. If its GE Silicone II Window and door it might air out fast.
Lowes sells and cuts plexi at pretty good prices.

I wouldn't put a heat pad under anything. If your room drops below 70 then put it on the side of the tank or back. Under the tank has the possibility of causing a fracture which has occurred too often to chance for me. Especially in a completed and established viv. Under the tank heat also has to try and penetrate through the drainage layer and substrate to get heat into the tank. If your tank is lifted to allow airflow under the tank then the pad under the tank would be ok if you just looking to evaporate water.

Since your tank needs to be at about 90 percent humidity all the time, misting the tank will need to be done at least twice a day or more so you'll have to monitor humidity and how fast it drops over the day. My Mist King sprays 5 times daily and for 15 seconds each time. Keeps my 20 long at about 92 to 87 percent humidity all day. Note that this tank is slightly vented and in front of some pretty dry heat from the wall.

As for a light, you want a bulb that has 6500K color temp if your going to be using live plants. Zoomed and Corallife should make one to fit the top.

Oh, keep in mind that you don't want the water too deep since they are not great swimmers and should be able to walk through the deepest section.

[Mitchgrunge93]

Thank you very much Don, you've been very helpful I'm happy that I can work with what I have. I'm so excited to build this thing. The reptile show sunday couldn't come any sooner T_T. I should hopefully find everything I need there. Much obliged I'll keep you guys posted on how the cage and frogs are coming along as soon as I get them.

[Mitchgrunge93]

Hey, sorry to double post but I was also wondering about adding a water feature, and I was thinking a waterfall. I see this: Exo Terra Repti Flo 200 Terrarium Pump | Josh's Frogs, which looks like I just connect a hose to, but I'm confused on as how to make the waterfall itself.