What type of algae is this

[cgr124]

Hello all, battling a new algae in my tank and trying to figure out what it is and how to stop it. It looks like a brown hair algae growing on my back glass. Tank is 2 years old and chemistry is good. No nitrates or phosphate. During Weekly water changes I wipe it off but it comes back a day or 2 later. My CUC are trochus and astrea snails but don’t seem to eat it. Anyone know what this is, how to get rid of it or what cuc would eat it? Thanks

 

[vetteguy53081]

Hello all, battling a new algae in my tank and trying to figure out what it is and how to stop it. It looks like a brown hair algae growing on my back glass. Tank is 2 years old and chemistry is good. No nitrates or phosphate. During Weekly water changes I wipe it off but it comes back a day or 2 later. My CUC are trochus and astrea snails but don’t seem to eat it. Anyone know what this is, how to get rid of it or what cuc would eat it? Thanks

Its green Hair Algae (GHA). Pull off as much as you can by hand and scrub and some 3% hydrogen peroxide to the water at 1.5ml per 10 gallons at night for 5 days.
Reduce white light intensity and number of hours of white lighting and add some snails such as :
Astrea
cerith
turbo grazer
trochus

A Pencil urchin

8-10 Caribbean blue leg hermits

Are you using RODI water or tap water from the faucet ?
What is your phosphate level?
Is tank at or near a window?

 

[cgr124]

Thanks for the reply. I use RODI water. Although I have topped off with filtered tap a few times. I’ll try the lighting and peroxide. My phosphate is .5 and not near a window. I wasn’t sure it was GHA since it looks brown to me. Appreciate the advice and reply! I’ll pick up some hermits too.

 

[bradleym]

I agree with all the advice you have received, but also FYI, typically high phosphates will make it grow fast. If you could target phosphates below. 0.1 that will help slow down the growth so that the CUC can stay on top of it. Nitrates above 50 also contribute to the fast growth, if you are testing for that.