hello- i'm new to this forum- been reading- and this site is really cool- thought i would add a comment- i keep reading people talking about mixed species tanks-- i've got a 55 gal tall terrarium- ive housed 2 fbt, 3 fb newts, 3 green tree frogs, various fish and loaches in this tank for 6 yrs- never had a prblem-- i have a good filter system in place but all seem to get along fine-- just thought i would add this