Stumped!!

[mrjohnreed]

I began dosing the Nyos Ion-B in my 2 reef tanks. My 75 gallon is perfectly fine. My 90 gallon however is a different story. The tank is hazy and I have some type of algae growing throughout the tank. My parameters are as follows:
PH- 8
KH- 16dkh
Nitrate- 5ppm
Phosphate- .25ppm
Calcium- 450ppm

I have attached some pictures but they may not be the best. Any and all help.is appreciated.

 

[KrisReef]

That high dkh will increase the likelihood of precipitation- which may be the source of the haziness? Not sure how it would impact algae?