I've been fighting the same thing for about 2 months now and I think I finally got it. There are some post on this site that were very helpfull.
I started with turning the lights to 4 hrs a day and feeding once every 4 days.
Also I've been doing 20-25% water changes every week.
I also bought 50 turbo's but most have been eaten by everything in the tank. The snails did work a little but I beleive it has been the cleaning and removing all the hair algae everyweek and the water changes.
Good Luck