Please can someone tell me how to reduce the nitrates in my tank as I have at least a guppy die every other day x I’ve done water changes and cleaned my internal filter sponges but the levels are still high, I’ve currently got lots of baby bristle noses and dry in the breading box as I saved eggs that the male kicked out, they all seem to be ok just the guppys ??
High nitrate is usually due to one or more of these four things: Overfeeding, overstocking, overdue water changes and/or high nitrate in your tapwater. If you are not guilty of any of the first three, then it will the last, and unfortunately there is not a lot you can do about that, other than using water form a different source. Having a heavily planed tank will help to keep nitrates lower and it’s also possible to set up a denitrifying filter (although that is pretty involved, and I’ve yet to see one of those in action). The first thing I would do is to check the nitrate level of your tap water. Also, what is the actual nitrate reading in your tank? For fish to be dying it woudl have to be through the roof, as most fish are relatively tolerant of nitrate if they are exposed to a graadually increasing concentration (a sudden increase is a different story). If it is just your guppies that are dying but the baby bristlenoses are OK, I would look elsewhere – perhaps the pH is too low for them.
- Guest answered 2 years ago