Reptile & Amphibian Forums

I recently aquired this aquarium from a customer for free and am going to try to use it for my bullfrog tadpoles when the metamorphize (not sure if that's a word). Just wanted to get some input. Here is a picture of it!

Any suggestions on how to get the hard water buildup off?

Another option is a terrarium I have that I could use and put another smaller aquarium inside for water. Here is a picture of it:

Any ideas?

Josh
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1.1 Rosy Boa
0.1 Mexican Rosy Boa
1.0 Coastal Carpet Python
3.1 Miniature Daschund
0.1 California Kingsnake
1.0 Ornate Box Turtle
0.1 Tiger Salamander

You can take a 7 or 17 qt tub and make a pond out of it instead of another tank inside.Both are good enough but the 36 is best.
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Archie Bottoms