yes a 5 gallon can be done.... do I recomend it.... HELL NO!!! Two reasons, 1 your gonna wanna go bigger withing 3 months and 2 if you even sneeze near a tank that small your gonna run into problems.
In a tank that small you can keep some gobies and a damsel. No clowns, tangs, triggers or any nice fish that you always see at pet stores which actually sucked you in in the first place.
That small you serioulsy add a little to much salt and your in for trouble, a little to much food, your in trouble. Serioulsy I wouldn't recomend anything less then a 29 gallon.
For equipment.... I recomend a lb per gallon of live rock only because it will make your life a trillion times easier. If you spend the money and get lb per gallon you will not need any filters what so ever, just some powerheads to move current around and thats it. You need a protein skimmer which will help remove organic waste from the water. You do not need to dish out crazy money for euros and all that. I have a 150 gallon reef and I only use a Coralife that is rated for a 65 gallon tank. People believe in crazy skimming but I don't. My tank is heavily stocked with inverts and fish and I have 180 lbs of live rock and that small skimmer and never ever had anything die on me yet.
In a tank that small you can keep some gobies and a damsel. No clowns, tangs, triggers or any nice fish that you always see at pet stores which actually sucked you in in the first place.
That small you serioulsy add a little to much salt and your in for trouble, a little to much food, your in trouble. Serioulsy I wouldn't recomend anything less then a 29 gallon.
For equipment.... I recomend a lb per gallon of live rock only because it will make your life a trillion times easier. If you spend the money and get lb per gallon you will not need any filters what so ever, just some powerheads to move current around and thats it. You need a protein skimmer which will help remove organic waste from the water. You do not need to dish out crazy money for euros and all that. I have a 150 gallon reef and I only use a Coralife that is rated for a 65 gallon tank. People believe in crazy skimming but I don't. My tank is heavily stocked with inverts and fish and I have 180 lbs of live rock and that small skimmer and never ever had anything die on me yet.