wow man so many ideas come to mind with this
what kinda say you gona get ? i would be extra carful with what you get for the frogs as rays can be very touchy with alot of chemicals so id be really worried about leaching.
also how you planning to keep the frogs on land. if one happens to venture onto water that ray will be on it in no time which could be very bad for both partys.
that salt tank was amazing have you thought of converting those stacks to tree trunks that would be stunning create a big chunk of the forrest floor.
good luck with this and take as many pics as you can then take 10 more
