2 months ago I moved my 90 gal reef after it was up for 2 years (removed all sand, rock and 10 gal of old water-reassembled tank). Water is a brown color, doesn't look like diatoms. Nothing growing on rocks, sand or glass. Water is 78 deg., 0 nitrate,0 nitrite,0 ammonia,8.4 ph. Using RO water and instant ocean-1.019 salinity. Only 20 blue hermit crabs in tank, want to clean up water before adding fish...

Place a bag of carbon in a medium flow area or in a reactor like a phosban reactor.

Thanks, will try that... Thinking about getting a phosban reactor for phosban, didn't know I could use it for other stuff too....

try killing your lights for a few days. It should clear up.

Also if you don't have macro algaes like chaetomorphia (brillo pad) I would add that in a refugium to balance and stabilize the tank and consume nitrates,phosphates, and carbon dioxide while returning oxygen.


my .02

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fw leiden since 1979, fo salt since 1979, mixed reef 55g 2002-2009. Strong emphasis on the tank taking care of itself. Balanced with plant life, no water changes, tap water, no filters in FW. Only dosing calcium, alk, mag in marine reef tanks. http://www.aquariumforum.com/f15/my-...ods-26410.html
recent tanks (till 2009) 7 years- 10g FW leiden 7 yrs, 55g mixed reef 7, 2 yrs, 20g FW leiden, 10 g fw leiden , 29g mixed reef, current tank 55g leiden

Have lights off for 2 days and it is clearing up. Don't have brillo pad in refug, in the area where the flow out is I have alot of grape algae.