10 gals is the perfect size for an ADF tank. IMO you can easily keep 10 frogs in a 10 gallon tank. I've kept them in various size species only tanks and find that 1 per gallon is conservative. They do not have a large bio-load and they enjoy eachothers company. Keep the water warm, 78-80, and lots of live plants would be best. I love it when I turn the light on my frog tank in the morning and see them sitting in the little plants..so cute. When I kept them with fake plants they never did that. Also make sure there are no sharp edges on any decor as their skin is sensitive. And make sure any decor/wood/rocks are planted firmly because ADF's can easily get themselves pinned down and drown when they can't come up for air. They appreciate a smooth substrate. They are very blind and will benefit from feedings in the same place every day. I'd say pick a couple little hidey holes, peices of decor or whatever you have in place for them, and put the food in that spot every day. They will quickly learn where to find the food when they smell it, and less, if any, will go uneaten which is less work for you. Keep an eye on the little guys weight gain. They'll be tiny when you get them from the lfs..if most are getting chubby and a couple are staying real small, take extra care to see that they get enough to eat. I have a tiny guy who I drop a pellet or worm right on his nose to make sure his chubby friend doesn't get everything first. I feed frog/tadpole bites every other day, on the other day I feed thawed bloodworms. ADF's are prone to bowel impaction so other pellet or dried foods are not reccomended for them.