Is this GHA

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shadyraro

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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.

6DD0E2B5-813C-42DF-A89E-124063D54F5F.jpeg
 
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salt creap

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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
 
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Dburr1014

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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.

This has a fern like appearance like bryopsis. A better pic will tell.

Screenshot_20221209_071954_Chrome.jpg
 
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shadyraro

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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.

This has a fern like appearance like bryopsis. A better pic will tell.

Screenshot_20221209_071954_Chrome.jpg
I had a good look and there’s no fern like grass at all, so I’m pretty certain it’s GHA.
 
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