I've been struggling a bit with some algae problems in my tanks. Nothing huge, but I've also noticed that some of my fish aren't as active as they used to be. Water tests consistently show that my nitrate levels are high, and I can't seem to get them down. I'm doing 20% water changes every week, and sometimes twice a week when the levels are extra high. Nitrite and ammonia are zero. I don't think I'm overfeeding. I have a white sand bottom, a few shrimp, some otos, and some dwarf cats who eat all the leftovers, so I rarely see anything rotting on the bottom.
Out of curiosity, I downloaded my city's water quality report today. There is a bunch of stuff I don't understand the significance of, but under Nitrate (NO3), it says the average for my area is 14ppm, with a range as high as 27ppm. That seems like it could be contributing to my problem, and could also explain why when I test the water right after a water change, the nitrate levels don't come down as much as my arithmetic says they should. (Admittedly, I don't make a habit of testing my tap water. Maybe I should.)
I'm wondering what I should do. I know a lot of people would suggest RO water, but I've heard that RO water isn't great for plants and invertebrates. Should I start partially using RO water in my water changes? If I don't have time to make a special trip to buy it, can I just substitute distilled water from the grocery store?
Or am I completely misunderstanding the way municipal water reports work? Is their nitrate level not the same thing as the measurement I get when I use my test kit?
Out of curiosity, I downloaded my city's water quality report today. There is a bunch of stuff I don't understand the significance of, but under Nitrate (NO3), it says the average for my area is 14ppm, with a range as high as 27ppm. That seems like it could be contributing to my problem, and could also explain why when I test the water right after a water change, the nitrate levels don't come down as much as my arithmetic says they should. (Admittedly, I don't make a habit of testing my tap water. Maybe I should.)
I'm wondering what I should do. I know a lot of people would suggest RO water, but I've heard that RO water isn't great for plants and invertebrates. Should I start partially using RO water in my water changes? If I don't have time to make a special trip to buy it, can I just substitute distilled water from the grocery store?
Or am I completely misunderstanding the way municipal water reports work? Is their nitrate level not the same thing as the measurement I get when I use my test kit?