Tank having issues.....a few Q`s

Last month my tank equipment started acting up.....1. Light timers failed. As a result I have been turning on and off the lights manually. So the on and off times have differed each day but generally speaking lights were on 10 hours day.2. T-5 ballasts acted up....I have not been running blue lights now for over a month3. RO DI replacement and my autotop off was down for awhile. I would just manually topoff.4. Temp. With recent cold spell the tank temp has droppped as low as 77 and has not gotten above 794. Various other little things that kinda threw my automation off, but didn't really affect my tank as a whole.
So last weekend I went at it hard on my tank. I fixed and cleaned just about everything. I replaced about 20% of the water over the course of a few days. I removed a few live rocks from my sump....(I have a lot of LR in my tank still) I cleaned the hell out of my sump. I cleaned the skimmers. I tested the water for all parameters and nothing was out of whack besides a ca and alk inbalance. One day I left the light off on my tank for 24 hours.
So for the last three days my water is getting increasingly cloudier. My coral is looking good, my fish all are healthy. I did lose two fish though. An anthias starved to death and decayed in my tank. Also, I believe my giant GBTA attacked a rather large kurdan cardinal fish and ate it.
AND it appears I have a small outbreak of some sort of brown algae that I notice in my newly cleaned sump. It looks like the stuff that you get when you first throw live rock in a tank and the phos spike causes a bloom.
So I can't figure out WTF is going on really.
I want to say the two dead fish are causing the cloudy water but my water volume is 350 gallons. I also want to say a 20% water change could do this but that has not been my experience.
I am going to do a 10% water change tonight. 
The only other thing I can think of doing is sitting back and being patient....that usually works.
HELP?

 

pretty much all the time. I have two of them actually.

 

yeah, fresh carbon, fresh gfo, nitrate reactor just refreshed (so culture is not great yet)

I am going to do the water change and test tonight (again) of course but until then I was just hoping for some ideas.

 

Parameters are all good. The water change never happened because I wanted to mix the salt longer. How long is long enough to mix saltwater?

I think I may just wait this one out. It looks like it is some sort of bloom....there is brown algae in my sump dusting everything. My fish, coral, everything is looking and acting normal. Water looking cloudy and yellow.

The nitrate reactor could be to blame I suppose. It is the glaring wildcard in my scenario I feel. However I have taken it off line and rinsed it in the past several times and this has never happened.

Would you guys wait this out or take some sort of immediate action? I have ozone I have not used yet. I may try that today......just a little as I have never used it before. But not sure what I have so not sure if it will kill it.

Otherwise I don't know what to do. I could do a water change everyday, but I am really not sure if that will help. Plus I would go through a box of salt every four days.....

Any further ideas? If not, I understand. There is not much to go on here.