YOU SAID:

It was like my brain Was floating in a fish tank

INTO JAPANESE

私の脳が水槽に浮かんでいるようでした

BACK INTO ENGLISH

My brain seemed to be floating in the aquarium

INTO JAPANESE

私の脳は水槽の中に浮かんでいるようでした

BACK INTO ENGLISH

My brain seemed to be floating in the aquarium