All the tanks I sprayed were done with Rhino coat but this needs to be done outside and everything you don't want sprayed needs to be masked off .
I painted my very first tank in the house not only did it ruin my floor it left black chunky
film on everything within a 20ft radius yes it's messy that's why I recommend doing it outside .
once it is done it looks great and holds up well and don't peal. my tanks put it through a test it holds up with both fresh and salt water.
I seen a few of my friends tanks done similar but they did theirs with flex seal .
looks good don't get me wrong but I did find a few flaws as it will hold up to freshwater,
it will not hold up with saltwater , the salt eats it like battery acid , and yes it can be scratched off ,
but if you decide you just want to use paint I see a lot of tanks done with kraylon fusions paints .
rhino coat is my first choice it also helps keep the tanks cooler in summer and insulates in the winter
this is another tank I sprayed 3 sides
as you can see I love the rhino coat it works well for me