What was the level of Ammonia test the time before this one?
If we assume that this recent test is a correct reading, my thought is that the dieing algae didn't contribute directly to that level, but it did contribute indirectly. When there was plenty of algae in the tank, it ate the Ammonia and other Nitrogen. Now that the algae is gone, what is left to eat N compounds
Do you have a RDP Refugium? If so turn on the lights 24 hrs per day for a while to help eat up the N until other processes can take up the slack. If no Refugium, place a ball of Chaeto up high in a saddle in the LR where it can get some good light.
What is the sand bed like? Is it clean white or is there a lot of life in it? How deep is the sand bed and what particle size?
What about rock on the bottom of the aquascaping structure covering areas of the sand? Any of that? If so, the next time you get the urge to make a change in the rocks, do a little of what I call the "tripod method."
BTW, water changes are a lot more trouble and no more effective than growing good algae. Algae eats Nitrogen pretty darn fast in the Refugium with the added a ball of Chaeto in good light in the display.
Please let us know how it goes.
Oh and one other thing, be sure to increase the snail population even a little more what seems reasonable. There is nothing like a good crew of herbivores to keep the rock from breaking out in hair algae all over again.
Edited by Mark Peterson - April 08 2010 at 10:45pm
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