it is different in every tank to begin start bringing Mg up to 1700 and do not do water change also in my personal experience I had a naso tang that eats it ! and keep alk and calcium a bit higher using Kalkwasser from kent I have used others but never liked the fact that they did not dissolve as easy or all the way as kent does ! good luck ! rty if that could work for you
You got to fix the reason what is causing your phosphate problem. Your trying to put a bandaid on to fix it. One how much food? Over Feeding Number #1 reason cause high phosphate. Two Are you using RO /DI water and TDS meter reading zero.If not change DI filter. Using GFO should bring it down quickly. Are you changing your GFO. You can shorter your lights to 6 hours, but the reason is too much nurtients are in your tank.
Really, I've had my tank for 42 years and still have a little hair algae. Don't worry about it, algae is actually a healthy sign and not an omen of doom. Go out to dinner and have a nice glass of merlot. That little hair algae will ebb and wane over your life.
People will tell you it is horrible, devastating, and un professional.
Every single healthy reef in the sea has some hair algae on it and if it is fine in the sea, it is fine in your tank. That is as long as it is not all over the place and overtaking the corals. Just a little is perfect.
I had that in my 58 gal tank. If you don't control your Phoshates it will slowly get worse. I had yellow tang that ate hair grass. If you get your Phoshates lower it will go away. I heard about that and try it and it didn't work. Watch what you add will throw everything off.
its only a 34 gallon and its been starting to spread onto more and more rocks. i want to kill it fast before it becomes part of my tank. also in the pictures it looks like a small spot but is not its about 2x2 .
I've gone through 5 gallons of Tech M in my fowlr system and it has not worked for me. I've did it 2x and went as high as 2300ppm and the bryopsis laughed at me.
So I got my mag to 1720 and it looks like its starting to die off a lot of the bryopsis is turning white but most of it is still green as grass . Should I keep it at 1700 or should I get it higher.
***Update:
after 3 weeks and some pluckings after, here are the results:
- most (over 95%) Bryopsis gone.
- 5% of left over Bryopsis looks like its browning out with just single strains
- snails became imobilized and was move to another tank and recovering
- many tiny and 1 large brittle star die
-1 linckia star condition still undetermine
-1 yellow milli acro frag bleached
I find the other algea grew a bit faster probably due to the extra nutirent from the Bryopsis die off. the Bryopsis seems to die faster when it has more exposure to the light and flow.
time will tell if they grow back. i am still keeping the mg level until 100% Bryopsis are gone.
note:The sg level has raised due to high mg. so check sg often.