New tank setup help?

[fishguy29]

Hi there. My tank has cycled and i just added 2 clown fish to my tank. My tank size is 66 - 67 gallon. I'm showing good readings for ammonia, nitrite, nitrate and PH is 8.2 or 8.3. I'm just wondering about my KH (alkalinty) which is showing alittle high. I'm getting a 130 reading and my test kit says anything over 125 consult with a aquarium specialist. Is this going to harm my clown fish (tank bred)? Also, I have fiji cured live rock which has some green hair like algae on it (or so i think thats what it is). There is a bit of it and it was on my live rock since i got it and i'm wondering is this a problem i need to worry about? Also, brown stuff showed up all over my rock a couple days before i bought my clowns last night and i'm just curious will this hurt them? Any help on this would be greatly appreciated,

Thanks
Chris