I have a baby giant and he gets the same basic care as my "regular" bettas. The only difference is that being a youngster, and a giant, I feed him more and he gets fed twice a day rather than once like my other boys.
He enjoys his 5 gallon but I'm sure he would love lots more room; who knows maybe I'll upgrade him someday.
BTW, I have his tank filled with plants (crypt, guppy grass, rosette sword, subwasswertang, frogbit) and an Aquaclear 20 filled with lots of bio media to keep him happy and I do 60-70% weekly water changes.
I love my big boy and can't thank our own EvilVOG enough for sending him to me. :)
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