dimanche 31 janvier 2016

Need some advice

I have a 55 gallon reef tank that has been up and running for 5 yrs.
I consistently have problems with brown crap that forms on my live rock and substrate. I do 5% (sometimes10%) water changes weekly and before I do I "turkey baste" my live rock to get all the crap off of it before vacuum it. Within seconds after settling down the brown crap is back on my live rock and substrate. I have Orbit Marine LED's and I just recently (2days ago) added T-5"s My perimeters are:
PH 8.4
Salinity .0124
Calcium 520
Nitrates 0
Nitrites 0
Phosphates 0
How can I finally rid myself of this??
Thanks!

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