first thing you got ot do is figure out why its growing....Is your tank new? Have you tried removing by hand?
Buying fish to rid tanks of alage isn't always the best way to go.
Black, huh?... Not the best of signs.
Any testing you do now may not accuritely reflect any imbalance, as the algae that's present is consuming the things you test for. Removal of the algae would really be the only way to test, it is unfortunately impossible.
Recheck your methods to see where imbalances may get their start.
HTH
Check your phosphates...If that is not a problem how old are your bulbs? Once your corraline algae starts growing it should choke out your hair algae. How long has the tank been setup?
how old is your tank......it is possible that this hair algae is simply part of your algae cycle......like the others have said, test the water...check your levels of ammonia, nitrite, nitrate, phosphate....what type of water are you using?....tap or ro/di? what type of fish do you have in the tank....what type of corals, what type of lights.....how old are teh lights.....what type of fish....how often do you feed????
to help you solve your problem, we will need more info on your tank!
good luck
jon
I have a yellow tang, 2 scooter blennies, 6 different types of damsels, red leg hermits, blue leg hermits, bout 38 together, sally light foot, and a sea cucumber. coral: i have a leather, star polyps, and a umbrella mushroom.
Wow. Hey, don't hold back on the livestock! LOL
Anyway, take into consideration that everything that enters the tank (water, food...) stays there. By using tap water, that's one place pollutants, such as phosphate, get in. Feeding that many fish has also got to be another suspect place for imbalances to begin. Only you know the specifics. First line of defence as a possible aid would be a small water change.
Dillution is the solution to pollution.
HTH