Originally Posted by Sadie
Okay, I give.. Where abouts should the nitrates be?? I have looked in several resources and I have several books and I can't find a guide number. I have done 50% changes in this tank for 4 or 5 days to get the other levels down. I know it can depend on circumstances. The only thing I have found in relative stone is that 40 is too high and at that level is very toxic. My other tank hovers around 10 but today was 5 but I have been changing the tank every day pretty much with treatment for ick for almost 2 weeks.
For most fish, anything below 40 is acceptable with below 30 even better, with other fish you need below 20