Spectral shift of MH = GHA?

[Phishguy]

I've even dealing with this for about a month now. It is very stubborn. It's either Gha or byprosis but when I posted pics, the common thought was Gha. I'm using Phoenix 14k and they are almost a year old. Could that be the root cause of the Gha?

 

[doctorgori]

I cudda swore there is a thread somewhere discussing this...sorta something about blaming spectral shift on algae .... I can't recall the specifics so I'm not gonna even attempt a search
I thought that Telsa looking guy elaborated on it ....
uh bailout request, ...someone? ....a lil help here ...

Edited to add: I put in a search anyway algae + MH ....a lil there but the other thread is better

 

[zigzag1]

IME, the root cause of algae growth is excess nutrients. JMTC & GL!