A simple guide to a successful water change routine

General discussion, not specific to any sub forum.
User avatar
Lexat
Posts: 90
Joined: Mon Apr 11, 2022 9:27 pm

A simple guide to a successful water change routine

Post by Lexat »

Looking for some insight on this, what are your thoughts on alternatives to the standard 50% weekly water change.

If I were to do a water change every 48 hours, what percentage of water would I need to change to give my fish the same benefits as a 50% change once a week. I'm curious to know if it's as simple as doing the math.

Breaking it down, the math suggests it would be around 14% every 2 days, but to be honest, that seems a bit low, even if the numbers do add up.
User avatar
brayk
Posts: 19
Joined: Mon Apr 11, 2022 11:46 am

Re: A simple guide to a successful water change routine

Post by brayk »

I actually do around 20% water change once a week myself. Considering the specifics of your setup is crucial here - do you have live plants in the tank? What's the tank size and what type of fish are you keeping? There's more to this than just a percentage, I think.
User avatar
Lexat
Posts: 90
Joined: Mon Apr 11, 2022 9:27 pm

Re: A simple guide to a successful water change routine

Post by Lexat »

brayk wrote: Sun Jun 26, 2022 10:01 pm I actually do around 20% water change once a week myself. Considering the specifics of your setup is crucial here - do you have live plants in the tank? What's the tank size and what type of fish are you keeping? There's more to this than just a percentage, I think.
I'm looking for a general answer, not something tailored to my specific situation. I'm curious about the concept as a whole. If it's not possible to provide a general answer, that's fine, just let me know.
User avatar
brayk
Posts: 19
Joined: Mon Apr 11, 2022 11:46 am

Re: A simple guide to a successful water change routine

Post by brayk »

If you plug your tank's specifics into aqadvisor.com, they'll give you a tailored water change recommendation.
User avatar
Snout
Posts: 67
Joined: Tue Jan 18, 2022 11:20 pm

Re: A simple guide to a successful water change routine

Post by Snout »

Lexat wrote: Sun Jun 26, 2022 8:18 pm Looking for some insight on this, what are your thoughts on alternatives to the standard 50% weekly water change.

If I were to do a water change every 48 hours, what percentage of water would I need to change to give my fish the same benefits as a 50% change once a week. I'm curious to know if it's as simple as doing the math.

Breaking it down, the math suggests it would be around 14% every 2 days, but to be honest, that seems a bit low, even if the numbers do add up.
I think I see what you're getting at - each time you change the water, you're not just swapping out old water, you're also replacing some of the newer water that's already been added. It's not as effective as doing one big change.

There used to be a chart that showed this, but I haven't seen it in a while. The main thing is, bigger water changes, combined with cleaning the gravel and maintaining the filter, make for a cleaner tank overall.

Have you thought about how you could make your water changes easier, faster, or more efficient?
User avatar
graye
Posts: 361
Joined: Sat Jan 08, 2022 9:05 pm

Re: A simple guide to a successful water change routine

Post by graye »

I don't really think about the exact percentage when doing water changes. For me, it's more about the frequency and the overall impact on the tank. I usually do around 30% every now and then, and if I do two changes in a week, I just do two 30% changes. The actual percentage doesn't seem that important to me as long as the tank isn't overstocked.

I think 50% is a bit arbitrary, and below 25% might not be enough. But trying to calculate the perfect percentage is more of a maths exercise than a practical solution. There are just too many variables at play - fish waste, food, fertilizers, and even changes in the water supplier's treatment process.

What really matters is how the water change affects you, not just the tank. Lugging buckets around can be a real pain, and it's not just about the physical strain. It can also get to you mentally. If you can make the process easier, like using a hose, that's a game-changer. For me, the limiting factor in keeping all my tanks running is the water changing. I have a bunch of tanks stored away that I won't set up because I don't have an automatic system, and I know that the work involved would take the fun out of it. When it comes to water changes, I think in terms of minutes, not gallons or litres.
User avatar
Rampar
Posts: 27
Joined: Sat Feb 05, 2022 12:44 am

Re: A simple guide to a successful water change routine

Post by Rampar »

I've found that nitrates tend to be the deciding factor for me when it comes to water changes. I'll usually wait two weeks, but only if parameters are looking good. The nitrate levels in my tanks vary, so some need more frequent changes and a higher percentage of water replaced - typically once a week.
User avatar
graye
Posts: 361
Joined: Sat Jan 08, 2022 9:05 pm

Re: A simple guide to a successful water change routine

Post by graye »

I think relying solely on water tests for scheduling changes might not be the best approach. Nitrate levels are crucial, but there's a lot that an API test kit doesn't account for that could be significant.
User avatar
Rampar
Posts: 27
Joined: Sat Feb 05, 2022 12:44 am

Re: A simple guide to a successful water change routine

Post by Rampar »

graye wrote: Mon Jun 27, 2022 9:25 am I don't really think about the exact percentage when doing water changes. For me, it's more about the frequency and the overall impact on the tank. I usually do around 30% every now and then, and if I do two changes in a week, I just do two 30% changes. The actual percentage doesn't seem that important to me as long as the tank isn't overstocked.

I think 50% is a bit arbitrary, and below 25% might not be enough. But trying to calculate the perfect percentage is more of a maths exercise than a practical solution. There are just too many variables at play - fish waste, food, fertilizers, and even changes in the water supplier's treatment process.

What really matters is how the water change affects you, not just the tank. Lugging buckets around can be a real pain, and it's not just about the physical strain. It can also get to you mentally. If you can make the process easier, like using a hose, that's a game-changer. For me, the limiting factor in keeping all my tanks running is the water changing. I have a bunch of tanks stored away that I won't set up because I don't have an automatic system, and I know that the work involved would take the fun out of it. When it comes to water changes, I think in terms of minutes, not gallons or litres.
I'd say sticking to a routine of water changes every two weeks is a good way to go.
User avatar
sSjey
Posts: 353
Joined: Mon Jan 17, 2022 11:23 am

Re: A simple guide to a successful water change routine

Post by sSjey »

My nitrate levels are always undetectable, so I couldn't rely on that as an indicator. My tap water contains 3 ppm of nitrates, according to my supplier, and my tester consistently reads just below 5 ppm. Fortunately, the plants in my tank efficiently handle the ammonia produced by the fish, preventing any significant nitrate buildup.

Given my tank's low KH, I find it essential to perform a 50% water change every week. This not only removes accumulated waste but also replenishes the KH levels, which is crucial for maintaining a stable environment.
Post Reply