Chemical reason why certain Zoas brown out?

[ZoWhat]

I have a colony of Capt America Zoas. They once were really pale....then u hit them to turn slightly blue.... and now they are starting to brown out

what the heck.

In the AM I'm dosing:
* 1.5oz vodka
* 1.5oz vinegar
* 1/2 teaspoon of pharmaceutical grade potassium chlor (tests staying at 420)
* 1/8th teaspoon pharmaceutical grade strontium
* capful of Seachem Iodide

Everything humming along.....but

Just started dosing:
* 1/2 teaspoon Soda Ash (bc dKH was slightly below 7)
* 1/2 teaspoon pharmaceutical grade Aspartic Acid palys seem to love it, zoas idk)

My MH 20k light are 9mos old as I always replace them in the 1st of January so I dont forget. Wondering if my MHs are color shifting....

Idea? Thoughts?



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[ZoWhat]

 

[DSC reef]

I'd say spectrum is playing a role. Similar to purple deaths browning out.

 

[bluewill]

Capful of Iodine daily ??????

 

[bluewill]

just read directions forget my question above
I'm dosing lugols a couple of drops every week