My green mushrooms turned brown..why?

[Mone52]

I have a 4 month old tank. I have some grern mushrooms that have been in the tank a month or so,and just recently started turning a brownish red color. I know that this is potentially caused by low or high lighting but im not sure which one,in my case.
My tank is a standard 100 gallon aquarium. . With two ecotech XR15 pro. Led light fixtures. . Any suggestions? Too much light maybe?
All my water parameters are fairly steady
Alk 9dkh
Ca 420
Amonia 0
Nitrate 5
Nitrite 0

 

[StevenBell]

What light schedule and intensity are you using?

 

[Mone52]

Right now im using the "shallow reef" schedule at 90 percent. I had them lower around 60-70 percent but mushrooms started v
Changing color so n I w im going with a higher percent

 

[StevenBell]

Firing a Radion at 90% for a shroom is a lot

 

[StevenBell]

Whats MG at?

 

[Mone52]

Mg is 1500... its high .. but its consistently at that level..... Thats the one of my parameters i have trouble keeping low.... i think i needa change my salt mixture. .. what percent do you recommend running radions?

 

[StevenBell]

For some softies I would try lowering at around 5-10% a week until you get em where you want em.But keeping MG that high in conjunction with the light is probably more of an issue.

 

[Mone52]

Yeah i think ill try both.. . And see where thet gets me. Im bettig g my high mG is finally catching up with me. Ill try a water change

 

[LetItReef]

Like stated above, too much light for Shroom. Maybe try putting it on a shady area if light intensity will remain the same.

 

[StevenBell]

Out of curiosity, what salt are you using and what are dosing.Those are the only two contributing factors that I can think of that would shoot MG that high

 

[StevenBell]

If I'm wrong someone call me on this.

 

[Mone52]

Im dosing with Bulk reef supplies 2 part alk,ca solution. .. my salt mix is Instant oceans Reef crystals