PH is too low. - How do I bring up the PH? (It was tested at 330 am light out at 9PM)
Ammonia should be zero ( how long are dying animals staying in your tank?) Look for that yellow tail damsel. That ammonia number says it's in there somewhere decaying. Get him out of there asap. - I've been looking for him but there is just no sign of him. I've moved most of my rock work and no dice. I'll go back in and se if I can find him
SG is low (should be closer to 1.026)
Change out more than 5g at at time. You should be changing 10 - 20% each month. _ I do 5g a week, so 20g a month
You have a high bio load and you're feeding quite a lot. - I dont feed all of that, I mix it up daily.
Make sure you have a lot of surface water movement. How slow is your turnover? - not too sure on the turn over maybe 1-2x. I am hoping to have the last of my peices to fix that this set of days off. I have lots of surface movement, but I'll try and point one of the k3 from the bottom to the top.
What are your calcium, magnesium and alk numbers like? - I dont have a test kit for these yet.

Which salt are you using? - IO
What is your regular maintenance schedule? - weekley 5g water change, befor and after each shift. Cleaning during that time.
Do you have any sand and are you cleaning it regularly? - Approx 1" unless the fish/pistol move it, but then I level it out.
Are you running any carbon? - I did but the tangs got more stressed out from it. They were always hiding, I set it up again to to see if it helps.
(not that it matters, but Calgary still has fluoride, it will take probably a year before they stop adding it)