Yep, I fully agree with ellisz. You may find that nothing will touch the hair algae, it may need to be removed by hand and kept at bay by controlling your NO3
levels. try and rid it by hand and cut back your lighting a little.
What are your NO3
readings, out of curiosity?
You may find that astrea snails and blue-legged hermits might help though.
If your phosphates are indeed high, cut back on your feeding and look into some phosphate remover. The phosphate removers, such as phosban, rowaphos etc, are only bandaids....the best remedy is to reduce the introduction of phosphates all together.
edited to add a couple more suggestions.