what test kit are you using?
some causes of nitrates are -
1. has anything recently died and not removed? Thats one possible cause
2. another is over feeding
3. unclean sponges/filters
4. do you have any other way of nutrient export besides water changes? (i.e. macro algae)
these are just my guesses
hth
__________________
Shane
Hobby Experience - Jun 2005
Tanks - 10 Gallon Semi-Reef
A Little Info On The Tank - 10 gallon; Filtration - Aquaclear 30, 10lbs of LR, 5-10lbs of LS; Lighting - 50W PC; Flow - 150 GPH from Aquaclear Filter (for now); No Protein Skimmer
System Bioload ■■■■■■■■■■■■■■■■■■■■■■■ 115%
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