Water change.

[ndw]

I'm sure this question is on here somewhere but I can't seem to find it. Is a 20% weekly water change to much in a 10g tank

 

[serena00]

It depends what is in your tank. I would say go to aqadvisor.com and type in your tank info and it will tell you how much water to take out for your tank to stay healthy.


36g semi-aggressive
20g community
5.5g betta/ghost shrimp
3g betta
2g fry

 

[ImACoolguy]

I do upwards of 50% once or twice a week in my 10g. It depends on bioload in the tank.


Caleb

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[mikem691]

50% weekly is the average. Can't have too much clean water.

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[ndw]

Checked on aqadvisor and it says I'm 96% stocked so 20% is about right. Thanks !

 

[TMRC Exotics]

In a 10 gallon I'd change at least 4 gallons at a time.... 40%. You can't overdo it.

 

[Ricky 1]

Smaller tanks are more susceptible to bio loads than larger tanks.............

 

[Mebbid]

Checked on aqadvisor and it says I'm 96% stocked so 20% is about right. Thanks !

Water changes at the very least should be done in response to nitrate removal.

Nitrates should optimally be around 20ppm. So if you have a 40ppm nitrate reading, then do a 50% water change.

Saying a 20% water change will be enough is really just ill informed. There are too many variables to consider when managing a tank. Are you overfeeding? Are any fish messy eaters? Do you have a substrate that allows food to get stuck and go uneaten? Does your food get sucked up into the filter just for it to decay and increase nitrates?

50% is the standard amount that people change on a weekly basis and for most people that works just fine. So in short, test your water. If the nitrates are high do a bigger water change; if they are low do a smaller one.

 

[1972ford]

I change a third of my water once a week and do extra water changes between the regulars a couple times a month.

 

[ndw]

Water changes at the very least should be done in response to nitrate removal.



Nitrates should optimally be around 20ppm. So if you have a 40ppm nitrate reading, then do a 50% water change.



Saying a 20% water change will be enough is really just ill informed. There are too many variables to consider when managing a tank. Are you overfeeding? Are any fish messy eaters? Do you have a substrate that allows food to get stuck and go uneaten? Does your food get sucked up into the filter just for it to decay and increase nitrates?



50% is the standard amount that people change on a weekly basis and for most people that works just fine. So in short, test your water. If the nitrates are high do a bigger water change; if they are low do a smaller one.

I have always done 20% would starting to do a 50% water change be bad for the fish or effect them. I done 20 % this morning and my nitrates are high still although 0 ammonia and 0 nitrites so looks like I will have to start bigger changes

 

[mikem691]

I have always done 20% would starting to do a 50% water change be bad for the fish or effect them. I done 20 % this morning and my nitrates are high still although 0 ammonia and 0 nitrites so looks like I will have to start bigger changes

This depends on how high the nitrates are. 80 or under I would just do another 30 to 40% change now. And then up your changes weekly to maintain a max of 20 on the nitrates. If the nitrates are real high then slowly increase the water changes until you get them under control then maintain with larger weekly changes.

 

[ndw]

They are between 20-40 on the chart and I done the 20% change this morning

 

[mikem691]

They are between 20-40 on the chart and I done the 20% change this morning

That's not that bad. Its really simple math. If you are at 40 and do a 50% you should now be at 20. I always do a 50% weekly change minimum. The thing is you need to figure out how much nitrate is being produced in say a week. If more is being produced than you are removing with water changes It will just keep going up. This also depends on if there are nitrates in your tap water.

 

[ndw]

I'm gonna go for a 50% change and reduce my feeding. All the food seems to go within a few minutes but I can't see any other reason for the nitrates to be high lately