Mystic montipora help

[Swampriss]

since adding this coral a few weeks ago and a few others some doing great with growth already, but this one isn't. Its losing its color and no polyps are out. I moved it to the bottom of the tank, any suggestions? I recently started dosing seachem reef complete, and baking soda as my alk dropped to 7 and calcium was at 380. Here are my parameters from yesterday gonna test again later.
Ph 8.3
Dkh 8.5
Calcium 440
Phosphate 0.2
Nitrate 0
Nitrite 0
Amonia 0

Very new to this, gha got out of control but I'm working on it hard, doesn't seem like it in the pics but I've done some serious work on it already and determined to get it down. Also dosing with vibrant to help.
I do not have a mag test is the only thing. Any advice would be great on what to do

 

[Swampriss]

This is the light im using.

On a side note my bi color blenny started eating my gsp, and nibbling on a leather. And I had an alien eye zoa with only two heads, one is now missing. It never ends does it lol

 

[Swampriss]

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[Swampriss]

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