[Zpmada]

Hello,

I first put dry dead rock in my 29 gallon saltwater tank with live sand and RODI water mixed with vibrant sea in September 2017.

I was adding Brightwell aquatics complete culture from then until November 2017. I also ghost fed a little and did a 50% water change.

In November 2017 I added reef cleaners 29 gallon clean up crew, snails only as I was concern hermit crabs would kill all the snails. So far so good, maybe one strand of hair algae that went away.

By December 2017 I had two clownfish, 1 Cardial fish, one purple firefish, a watchman goby and pistol shrimp. I did weekly 4 gallon water changes, and my parameters always looked good (zero ammonia, zero nitrite, zero nitrate, 0 phosphate, 380ppm calcium, salinity 1.025, temperature 78f,

The sand it too fine for me to gravel vac, but I figure my snails and watchman goby help clean it.

I also have a reef octopus classic 100 skimmer, aquaclear 50 with the included charcoal and bioball bag. I don't use the sponge as I hear it can be a nitrate trap.

About a week ago I started noticing what is looking like a green hair algae outbreak. Yesterday I bumped up my weekly 4 gallon water change to 5 gallon even though I'm still reading 0ppm nitrate with my API test kit.

I am noticing some coraline algae starting up, but only on the rock facing the powerhead.

Not sure what is going on with this hair algae. Nothing changed lately. I attached photos just incase it's not freen hair algae. Some is a little brown looking.