I recently purchased some more live rock for my aquarium totallin 20lbs. I bought 8lbs from a different LFS
and I think it was uncured but he said it was cured. I didn't know it at the time being a newbie ut the rocks had plenty of brown algae on them.
Now the brown algae is spreading to some of my other rocks, sand, and walls. I also got this little foamy bubbles at the top of the water.. what does this mean?
I also seem to be losing salt!.. I can't figure this out.. water is evaporating,.. so my SG
should increase.. but instead it's staying the same and even going down.. I washed my hydrometer with hot water to make sure there is nothing stuck on it, same results..
could changing filter media/adding more filter out some of the salt so that it goes down? I'm really puzzled here.
could the salt be depositing on the rocks/sand and separating out of the water?.. I'm using Instant Ocean.