I changed my water 4 days ago (20%) and I use RO
water. I got up this morning and I have this yucky fuzzy brown stuff on my live rock. My readings are as follows:
56 gallon tank- 1 clown fish, I coral banded, I fire shrimp, 1 peppermint shrimp, 40lbs live rock
Phosphates: 0 (yeah!! Finally)
PH : 7.8 ( stable at this for months)
Calcium : 560 ( I test for this but need to research more so not sure if this is bad)
Copper : 0
: 9 - 161.1
Lighting: coralife dual fixture with two T5...just put new bulbs in 4 weeks ago.
I feed every other day.
I think my water looks good. I have my lighting on around 8 hours a day. Why am I getting this fuzzy brown stuff now? I change my water every 8-10 days religiously. How do I get rid of it??