Chinese algae eaters do eat a lot of algae when juveniles, but as they mature they pay less and less interest in the stuff as they go onto a more protein orientated diet.
Though I know it's not all that normal my CAE is about 7" and still eats algae and isen't aggresive at all. Did the OP say he had a CAE though? I don't recall him being specific.
Get him a 20-30gallon long tank, put the chinese algae eater in it, have no other bottom dwellers apart from critters like peaceful shrimp, tankmates wise only stock small indentical looking fast tetras, danios and barbs etc like neon tetras, pearl danio's, rosey barbs etc.
Remember to cycle the tank properly (like do a fishless cycle with pure ammonia, or clone some established filter media into the tank etc) and keep it clean with regular once weekly water changes etc and thats about it .
Don't put fish which are slow swimming, or bottom dwellers, or which stand out in appearance by themselves, or have large flat bodies (like angel fish, discus, gourami's etc)- these sorts of fish are usuallu targets of chinese algae eaters, however small fast swimming indentical looking fish are rarely bothered by CAE's etc.