Is this GHA

[shadyraro]

Can someone tell me if this is GHA? I believe it is and have a fair bit on my rocks. Tank is 1.5yr old 60g brought second hand with the rock, phos and nitrates are zero. I plan on removing the rocks tomorrow during a water change to try and remove it and scrub it off. I don’t want to use any chemicals at all, I have lots of various snails I believe some turbos, astraea and Nass and 6 fish including a lawnmower.

 

[I never finish anythi]

Please a picture under proper lighting would help .

 

[shadyraro]

Sorry

 

[salt creap]

Sorry

definitely gha - more turbos snails and blue leg crabs and lower phos and nitrate is probably on the high side

 

[shadyraro]

definitely gha - more turbos snails and blue leg crabs and lower phos and nitrate is probably on the high side

What should the phos and nitrate levels be at?

 

[salt creap]

less than what yours is rn…lol depends on the tank and demand by corals but i have a lot of lps and ephyllia so i keep my nitrate is around 10-15 cuz my babies like it lol if i had to guess phos is 0.1 or lower i dont test phos, only nitrates,tbh because when those get high the phos is usually starting to as well. i water change 15%weekly which maintains mine based on what i feed/bioload

 

[Dburr1014]

Sorry

This looks like bryopsis.
Pull some of and spread it out on a paper towel. Take a pic and post. If it's fern like, you have bryopsis.
https://www.saltwateraquariumblog.c...member, that is the,for each gallon of water.
This has a fern like appearance like bryopsis. A better pic will tell.

 

[AydenLincoln]

I thinks it’s GHA! An urchin will eat it.

 

[I never finish anythi]

It looks more like bryopsis to me .

 

[_Jake_Simek_]

I thinks it’s GHA! An urchin will eat it.

For me my urchin ate it, but only if i kept it short for him. Once i did that it was all gone in a week.

 

[shadyraro]

This looks like bryopsis.
Pull some of and spread it out on a paper towel. Take a pic and post. If it's fern like, you have bryopsis.
https://www.saltwateraquariumblog.c...member, that is the,for each gallon of water.
This has a fern like appearance like bryopsis. A better pic will tell.

I had a good look and there’s no fern like grass at all, so I’m pretty certain it’s GHA.

 

[sixty_reefer]

The algae seems standard GHA. You will need to raise your nutrients as soon as possible before it gets worst.