I was wondering if you could help me identify a reason for a sudden nitrate spike in my tank. I must confess I have become rather lazy when it comes to testing the aquarium water as for months the tests have been exactly the same. I have not tested for a few weeks but tested this morning and was horrified to notice that the nitrate level was at 80ppm!!
I recently put some new plastic plants in the aquarium but washed them thoroughly in old tank water before adding them. Could this be a reason for the sudden spike? My water has been perfect for months.
I have just done a large water change and the nitrate now sits at 40ppm but obviously this needs to come down further. Are frequent water changes the answer here?
180 litre fluval with 2 filters and 30cm airstone
1 x black moor
1 x red cap
1 x leopard plec
1 x common goldfish
1 x calico ryukin
1 x white ranchu
Water parameters this monring
Ammonia - 0 ppm
Nitrate - 80ppm
Nitrite - 0
PH - 8
I use Prime water conditioner which is supposed to detoxify nitrate. Will this help?
I know the tank is slightly overstocked but I have an additional filter and this has never affected the water parameters before.
Many thanks in advance