90 gallon turning alittle cloudy

[silkks11]

Hello, I have 3 salt water tanks, 125, 90 and a 30, but the only one that is giving me problems is my 90, I have a panther grouper, a huma huma triger, undulate trigger, and a red volitan lion. For filtration i have a fluval 404, a fluval submergable filter, a bio wheel, a magnum H.O.T filer and a prism protien skimmer. My fish are very healthy but the water is alittle cloudy, I tested it and all the levels are fine except that the alk was little low. How can I fix this cloudiness.

 

[q]

What kind of cloudy?
Dose it have a color?
Try a yellow test. Take a white piece of plasic and make a yellow mark on it with a high lighter or something similar. Hold it on the back of the tank. If you can't see it then it fails. It is a organic build up in the tank and can be removed by carbon. That was my shot in the dark. Need more specific info.

 

[karvis]

if it is green then it is algae, it can be removed with a water change.

 

[silkks11]

The color of it is a tiny bit milky, I have a sh*t load of filtration all running good carbon, and I feed live 3 times a week, the tank has been running for about 6months and two weeks ago this just started, so I have no clue what it is.

 

[broomer5]

What's your calcium level if I may ask ?
With a low alk, you may have higher than desired calcium. May have.
This is just a guess at this point.