Help Please!!

[rivero9897]

Hi everyone, I have been battling what seems to be a bacterial bloom for two weeks now and i've tried everything from water changes to light cycle reduction and now i am starting to think that it's not bacteria but what looks like white hair algae? tank is 4 months old. Idk i would love any advice!! Thanks.

My tank specs are: 75 gallons total volume, salinity at 1.025, nitrates 0 ppm, nitrites 0 ppm, PH 8.1, ammonia at 0 ppm, Phosphates at 0.2 ppm, calcium at 440 ppm, don't test for magnesium.

[rivero9897]

this isn't my tank but mine looks just like it and covers my rocks and sand bed..

http://www.wetwebmedia.com/Algae%20and%20Plt%20Pix/Green%20Algae/Unknown%20Greens/fuzz.JPG

[Metal Man 1221]

Its kind of hard to tell, but its defiantly an algae of some type.
your phosphates are a little high. The acceptable level for reef tanks is around .03 ppm.

How much are you feeding?
How often are you doing water changes, and how much at a time?
Are you running GFO?

[rivero9897]

I don't have any fish in the tank at the moment, just some zoas and lps corals so i barely feed anything. I am running a dual GFO/ Carbon reactor from brs and i do 5 gallon water changes every week which is about 7.8% wc per week.

[Metal Man 1221]

Maybe try to bring up your water changes to 10g a week, and siphon off the rocks when you change water.

How often do you change your GFO?
How much flow is the GFO getting? It should be tumbling in the reactor.

[deanearp]

The other thing to make sure is that you are using RO water for your changes and make sure that you are using a salt mix that is good.