Quote:
Originally posted by Crimthann
I'd probably blame the shifting around of the sand bed kicking up small amounts of ammonia into the water that the diatoms are chewing up. How long has it been doing this for? How long has the tank been up for?
Realistically if they're diatoms I'd probably just do a 10-15 gal water change and give it a week or two and see if it goes away.
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Yea, thats what I thought also. The tank has been up for 6 months and the brown dust on sand started after the Chemi-Clean which was last week.
I did a 10% - 20% water change. The reason I say a range is because I do not have an accurate water volume. I have a 75gal tank, 100# LR, 5" DSB, 20 gal sump. I estimate that to be 75 - 85 gals of water. My salt container is 15gal which would be 20% of the 75gal water.
When doing a large water change what happens if the water goes below coral that are close to the surface? I never have drained water below the highest coral so that everything is always submerged.