When I started my 75G tank (first tank in many, many years) back in January and I had my first algae outbreak, I went out and got 5 SAE and 12 Japonica Amano Shrimp (snails were out of the question with my clown loaches). The algae went away, truth be told it wasn't really that bad, and two of SAEs, I believe, starved. I bought algae tabs to supplement their diet and the remain three are not big and fat and are already feeding on zucchini and flake food. If I don't feed for day or two, the SAEs will nibble on algae again. I've sinceadded otos to take up the slack and couldn't be happier. They hype is well founded, I just wish they were hardier. I do have two or three that are 5 or 6 months old, the other 7 are new.
I thought about removing mine too, but I like their personality and their antics too much. They play ALL the time and rest in some of the oddest positions.