not sure if I understand the question :huh: ...How effective are partial water changes in reducing nitrate? Water changes and plants are about the only effective measures. But a partial water change of that size should be done weekly. Do you mean doing that more often :huh: Or does this question relate to the health/happiness of the fish?
Doesn't matter the tank size or fish stock. Trying to figure out whether more water changes and anything else could help lower the nitrates.
I'll try the plants to see if that contributes to lowering the nitrates
Why does it not matter? Water changes and plants will help bring them down. Plants eat them, while water changes remove them. Also 30% may not be enought, try 50-75%. Just because the look fine, doset mean that they ARE fine.
When I said the size or number of fishes doesn't matter it's because whether it's 10 or 100 gal tank with a certain number of fishes, the answer probably would be the same- overstocked right? That's already stipulated in the initial post.
I'll try going on higher percentage of water changes.
There are different levels of overstocked'ness'. Lets say I have a Pacu in a 10g, and a Pacu in a 100g. Sure both are overstocked, but the 10g is overstocked more than the other.
The last time I had plants, they kept dying (turning brown). I've gone to different lfs and was told anywhere from leaving too much light to not enough. One did recommend buying a C02 device though which I'm not inclined to do.
As for the different level of overstockness, I apologize for any misuderstanding. I meant the tank has more fish than usual not the 1 fish in a small tank because the obvious suggestion would be a larger tank in both cases. Right?