I have a 29 gallon tank with cardinals, a cory and a few black skirt tetras. ive always been slightly confused about temperature. i use a standard dial heater with an inkbird controller. i usually had it set to 77f to where it would turn on if the temp reached 76 and go up. but being in california its gotten pretty hot so it gets a bit higher like 78-80. so i looked up temperature and im a bit confused. is the tempurature for my fish actually able to have a wider range than i thought? according to the numbers i see maybe. what do you think i should be doing? should i set the temp higher?