Ghost shrimp work well I haven them in my fbt tank. I would put eco earth or larger river rocks over the land portion of your tank. Accidentally ingesting a piece of gravel could be the end for one of your toads. I also use the repto filter and have no complaints. Guppies from a clean source make a good treat. Cut up nightcrawlers also make a good addition to their diet if you can get them tong trained.

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