When to Change Aquarium Water

Knowing when to change the water in your aquarium is important. All fish tanks are different, and there are many factors that will determine when it is time to change the water in your aquarium.

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[ALLDAYEVERYDAYKIM]

This dude is one of the coolest cats I met in the industry. I got to chat with him a bit last year in Washington state at a aquarium convention.

[caewalker]

I don't know how, but I just have to look at my aquarium and I can tell if it needs a water change. The closest thing I can associate with it is that it looks sad or not as vibrant. Thanks Zenzo.

[timchancey]

Awesome info, guess we all need a refresher course on stuff we got use to an let go. Well done.

[jp_zen]

Iv seen alot of these videos and this 1 is by far the best! Straight and to the point, and well spoken for beginners to not be overwhelmed. Great job Zenzo! Thanks for the post 🖤🤘🤘

[collinskj]

I just subscribed, I have seen so many videos where someone just says, do a 50 percent water change once a week with no real explanation as to why you should do so, this video made so much more sense to me, thank you!

[gameroftheyear]

With my 55 gallon Mbuna tank, I’ve got 15 fish, more females with males, with two marineland 350 penguin HOB filters running and a 550gph Powerhead that I like to run for a few hours every other day. So with all of that running I like to change 40-50% of the water once a week with a good gravel vac and it’s worked very well for me. Tanks been running for 8 months and I’ve yet to have a water parameter issue or spike. Hoping it still goes strong! Great video!

[Bloodhoundfostermom]

Gotta love some on point water change information ...fish room looks fabulous!

[maxextz]

Brilliant videos, really informative and interesting. Thank you.

[dusk]

Another fantastic video. The misconception is that people don't understand why the are changing water.

How often are you seeing the chemical properties of you water go outside the safe parameters of the species you keep? How often are you testing to see those levels?
How many ecological niches does your tank have? Do you have annoxic zones or DOSing systems?
The technical answer is that you may never have to change your water if your background in biology is deep enough, and you test enough differing nutrients.
Established planted systems with low load and the marine Triton method are prominent examples where you can go months and years without needing a change.
However, you will always need to provide input. And the system will always need conversion and output. Understand those and you understand the system.

Sorry to interject, this is by far my favorite topic in the hobby

[conniepeterson]

Love the date on the glass idea!! I have a messy calendar, what tank.... water, filter, total.... I'm switching to your method! Clever

[samfru]

Very good video. You covered a lot of variable situations that would affect the frequency of water changes

[jeffbeatty]

Just subscribed. Good information. I am New to the hobby this year and appreciate all the fish channels that Youtube has.

[Ken_James_SV]

Exactly the information I was after. Thanks heaps for easy instructions and explanations. Writing the date on the glass is a brilliant idea, Thank you. 👍🏼

[jeffreymcleod]

I just absolutely love your videos....
Thank you for all your time and effort...
Your knowledge has helped me so much!

[spoudaois]

Excellent video. You get to the point and explain it well.

[Revelation]

Thank you! Helpful and informative information!

[TW_Chizm]

Beard is on point! I over do it because I love gravel vacuuming and water changing, but I guess the best reason is when your nitrates start creeping.

[mrswiggles]

hi zenzo, my fav tanks mud skippers and the tank with the yellow fish. Love those. Wanted to do a tank like that but before I knew it, no more room. So I'll just admire yours.

[markhunter]

Very helpful video. The mangroves behind you look like they’re doing well 🤓