Once full grown you can use night crawlers. I have trained the frogs to come right up to the top of the tank to get them. Like other animals simple things can teach them to come up top. I tap the top of the tank before each feeding. Over time the frogs will get the idea to come up.

My frogs prefer the worms live. They didn't respond as well or would reject the full worms if they were cut in half. I still find that strange. I kept the bait night crawlers in the fridge and each full grown frog got one every three days or so. If I did it more frequently they didn't seem hungry and wouldn't come to a feeding. With those rear claws, if the worms were to large they would shred the worms to their manageable size. The frogs seemed to stay fat and happy so I was happy. It was always interesting to me to see those worms wiggle around in the bellies of the frogs.

Compost worms are different than other worms. A bit smaller. They do a double duty for me when I feed those in composting all my kitchen scraps and then using to feed the frogs. I would say do some reading on worm keeping if you are interested in that. It can be done pretty easily in a small space with just a few plastic containers. I use two rubbermaid totes right now.

When I had guppies in the tank I floated water sprite in the top of the tank. The baby guppies had a place to hide and, once larger, were a food source. The water sprite was a nice addition and place for the frogs to hide on the surface but it also blocked some of the light shielding the frogs.

I have a 29 tall tank. Previously I had a 17 tall. I have never had an issue for the frogs swimming to the top to get air. I'm not sure what that whole debate is about. I can find no evidence anywhere that says a tall tank is an issue. Mt frogs still get a great amount of water to swim in and seem happy. It does make it a pain to decorate. lol.

oooh this year I did do some pinkies. Some tiny baby mice. Yup. That was interesting! I got some pretty small ones and teased the frogs to the top of the tank. They sucked those down pretty quick. I only did it once. It was a little to traumatic to hear those babies squeaking and then one came up and started swimming around the top of the tank to get away calling out. Nope never again will I do that one. Interesting but gives me shivers.

In my experience the only time I have dealt with bloat is when it comes to over feeding. That can happen with any food source not just blood worms. Remembering we are care takers to confined creatures is the key to all of this. We make the situation a good as can be and that includes feeding a varied diet. I rescued my frogs from teachers who can't be bothered anymore to keep their frogs. I have a huge soap box about that. I had to do my homework and previously had some great sites and forums help me out in some tough beginnings. Now I am happy to share what I have learned.