I have a 185g aquarium with one 7" Pacu. This is temporary and he will be housed in a 300g aquarium later. Short version.. I was out of the country for 2 months and had a neighbor watch the house and was kind enough to keep my fish fed and perform regular maintenance. For some reason, this "regular maintenance" did not include regular water changes nor removing algae 
I'm planning to just tear down the tank and start from scratch. I am thinking about doing a bare-bottom tank or a very minimal amount of gravel. Does anyone have any views about whether or not a bare-bottom tank would be fine for a Pacu?

I'm planning to just tear down the tank and start from scratch. I am thinking about doing a bare-bottom tank or a very minimal amount of gravel. Does anyone have any views about whether or not a bare-bottom tank would be fine for a Pacu?