How do I find out how much my tank can support?erinw347 said:The one inch per gallon rule is not accurate or reliable. It all depends on the type of fish you’re keeping.
Some fish have really light bioloads, like small schooling fish.
Some though have very heavy bioloads, like plecos.
The key is to find how much your tank can support.
Adding filtration doesn’t make it all that much better. Yes it adds additional surface area for beneficial bacteria, but it’s all about how much nitrates are produced.
You can overstock your tank if you’d like, but that means you have to do extra water changes to keep nitrates down.
Addressing the 1inch/gallon, don't follow that as it is a rule of thumb that is not accurate.TheFISH12 said:I have been told that I can have more fish than one inch per gallon if I get better filtration and can balance it. How do I do this?
Again it depends on how many nitrates are produced. You generally want to keep nitrates under 20, but some fish are okay up to 40. If your fish produce, let’s say, 5ppm nitrates a day, you will have to do 50% water changes every other day if you want to keep nitrates under 20 ppm.TheFISH12 said:How do I find out how much my tank can support?
Zebra danios are hardy and will probably be fine up to 40 but my corys get stressed over 20. Both of those fish have a relatively low bioload though.TheFISH12 said:What level nitrates are zebra danios and corys fine with?