Ok so i was cleaning out flashes tank and while i did that i replaced his food bowl and i threw away the old food from the last day or 2 and in his food bowl i found rotted cucumber it was so old it was yellow and it had a horrible smell and it look like it had bite marks on it and i threw it away. He has been basking all day and im worried that it might have made him sick and i hope its not a big deal should i be concerned? I dont ever feed him old or rotted food this was just a mistake please help. also he is a russian.