The best place locally for clean-up critters that I know of is CB Pets in Bulverde. I don't know that Turbos are the answer you are looking for. I have had a lot better success with Nerite & Cerith snails. The absolute best hair algae grazers I have had were the dwarf mexican hermits from GARF, but others will disagree with me.

I think they are about .75/snail at CB Pets. I would also take a good look at what you are doing to control your phosphate levels. Grazers will help control hair algae, but phosphates are usually the cause.

Gary