Tackle hair algae :-
1) Change 10-15% of your tank volume weekly, siphon detritus2) Reduce feeding, ensure no excess floating in the tank3) Use Rowaphos in a Fluidize reactor, I find rowaphos most effective in bringing down phosphate to zero4) Manual plug out those reachable algae by hand or a Pincher5) Reduce bioload (number of fish) base on your tank size and age, the younger your tank, the lesser fish you should have.6) Once 90% of your hair algae is gone, you can try growing some cheato or using Algae scrubber to compete nutrient export out of main tank