Open Brain not opening

[rthomas]

I have the prizm skimmer by red sea. It seems to be picking up the muck

 

[apollothesun]

brain not opening

i have one too. he doesnt fair well with a low alkalinity. he does great at 8.6 dkh. good luck

30 g.
water flow comes from A penguin 660 with a circular adaptor.
protein skimmer
penguin bio-wheel filter
2 65 watt 50/50 = 130 watts
Salinity = 1.024
PH = 8.2
calcium = 420
amonia = 0
Nitrate = 5 -10
Nitrite = <0.3

I checked the last couple of nights and the only thing around it is my clown which loves to be around it.