So i have my betta in a 1.5 gallon cube and the "kit" came with a filter (that i wasn't using). His complete water change was yesterday and we put the filter in just to see if he'd be ok with it. So when we put him back in he swam around and checked to make sure all of his stuff was there (like he always does). He saw the filter.. and looked back at me as if to say ("what the H#&& is this?!?!?" My husband and i laughed so hard!
So being the "momma knows best" type i let him get used to it... the lil' stinker purposefully got himself stuck on the bottom of the intake tube..
(and i know it was on purpose cuz i saw him do it, and he made sure i was watching). So i quickly unplugged the filter. Long story short: we took out the filter...
This morning my husband found that the fish had built a bubble nest in the exact place the filter was... what a lil stinker