As most people here will tell you it is far better to find the source of your algae and fix the problem instead of buying livestock to eat it. If you just want some help keeping small amounts of algae off plant leaves go with an Otto, or if you want a little help keeping the glass clean get a pleco. But if you are attempting to combat your algae issues with livestock you are going about it the wrong way. You should buy the live stock you like, and not have a tank filled with stuff you don't want so it can eat your algae. If you are having a major algae problem you should post some pictures and there will be plenty of people to help you out with troubleshooting the issue. A good way to help combat the algae is to use the "One-Two Punch", but this is just a band-aid on a broken arm if you don't try to address the root problem. As the livestock grows and ages they tend to eat less and less algae, I have about 8 TSAE in my 75 gallon aquarium, I bought them because I like them, and they would eat lots of algae when I first got them and now they just wait for the food from heaven, aka my custom blend fish flakes.