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Old 07-22-2012, 03:50 AM
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A few things come to mind;
Have your LFS test both your tapwater and your tank water for PO4
If you get tank readings for it, but none from your tap, cut back on the live food a bit ( do you rinse it ? )
If you get tap readings for it, use RO water

To lower your salinity, remove a small amount of tank water daily ( 1/2 to 1 litre or so ) and replace with fresh water, until your Sg is where you want it
For future reference, the same can be done in reverse if it's too low;
All you would need to do is slowly add new SW and let it evaporate
Lowering salinity may be done faster than raising it without adverse effects, but take it slow
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