Originally Posted by anastasisariel
Does anyone have a good idea on how much nitrates should be in my tank if I have Cardinals and Crystal Red Shrimp? I just bought a test kit and just as I thought my tank is nitrate depleted (which in one way is great). I know my glosso will benefit from nitrates but I'm concerned with how much my shrimp and fish could handle.. if it was just danios I wouldn't care, but I really want things to go well for my cardinals and shrimp.
I dosed 45 ppm per week, 15ppm 3x a week on my 180 for 2 years, packed full of 120 fat healthy cardinals.
I'll let you decide.
CRS: started with 12, ended up with 40-45 12 months later dosing full EI on a 40 gal.
Both species die for many OTHER reasons than NO3 which, by in large, it relatively non toxic.
I'd wager 10,000% more deaths occur with poor CO2 management for both species as far as plant specific additions go.
However, changes in KH, Temps, pre existing diseases, Cardinals are notorious for complete wipe outs even with dosing or plants involved(as are CRS's). Unless you test and isolate specifically for NO3 vai KNO3 dosing, you cannot say ANYTHING.
Given the fact they do extremely well over time, and bred, while dosing the KNO3.........both species do not appear to have any issues with the NO3 in and of themselves.
Perhaps something made them less susceptible. This is not likely as I dose high traces and kept warmer than optimal tempos for the CRS's and the Cards always have warmer water, 82-84F (less and they do not do as well for me).
I think NO3 is a myth until you start going over 30-40ppm etc.
Even there, this is speculation for myself. But as far as plant needs and dosing, 10+/- ppm of NO3 should not be that tough to do whether you use a test kit or water changes.
So better management of NO3 will help, better testing or better water changes and dosing frequency etc, then focus elsewhere for any issues(temp).
I would NOT keep these two species together(Are you?).
CRS's do better at lower temps, Cards, at higher temps, a 10 F spread is common.(CRS: 60-74F, Cards say 82-88F)
I kept the CRS's at 79 F for a year, they got into the 80's and 90's during the summer, but did not breed and mortality was more likely.
I think 78-79 is the upper range for them.