Tap water MUST be treated or this will kill your frog. You can also use bottled water, but NO distilled for soaking, this can be used to spray the glass in the enclosure to keep water spots from forming. You want spring water, just make sure there is nothing added. Some times they will add sodium.

IMO you'll need a 20 to 30 vertical gallon enclosure for two WTF. They are quiet active at night and will use and need every bit of space you give them. I have 3 in the exo terra 18x18x24 but getting the 36x18x36 so they are more comfortable, these guys can get big.

Humidity and temps are very important to keep these guys healthy & happy. Temp range 75(nighttime)-85(daytime) with humidity 50-60%

Food source is good, but if these are still babies you want to dust w/calcium every other day & use a good multi-vitamin the other days. I also use a probiotic once a week & one day a week non dusted feeders. Also bowl feeding works great, this way the bugs can't hide from the frog, the frog won't ingest substrate & it's easy to remove uneaten feeders. FYI turkish roaches don't climb like the lobster do.

Keep an eye out for poop. It should be dark brown and well formed, if not you should take a sample into your vet for testing.

You mentioned you got these at a show in SC. I went to the Columbia ReptiCon and saw several WTF there but the ones I saw did not look good, I hope you were able to purchase
some healthy ones.

I'm pretty new at WTF, but I've had other amphibians for 2 years so I hope some of the WTF experts chime in to help fill in the blanks.

This is a must read Frog Forum - White's Tree Frog Care - Litoria caerulea