I know their are several topics on this already but need to find an answer that will work. Problem is Hair Algae, pics attached tank info 2 + yrs and no problems all parameters check out bulbs replaced 96w PC's 1 is full actinic other is 10,000k tank is 30 gal with 20 gal sump/refugium ph 8 - 8.2 calcium 420ppm alk 7dkh nitrates 10-15 ppm phos undected allthough algae is consuming it probably, read articles on magnesium etc dont have magn test kit though. Refugium has grape calerpa and cheato, live sand bed display lights are actinic on for 8hrs 10k on 6hrs. have lawnmower blenny that does nothing 3 lg turbo snails blue tang and not sure the name of other tang see pic none do anything for it......please help any more info needed will provide