Too much of a water change?

LBDave

Peacock Bass
MFK Member
Nov 27, 2018
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I've only ever kept community fish and yes I do have a test kit.
Well I just suggest reading about the fish. You can use the search in the forum. I had africans a long time ago and only problem I had was balancing aggression. I am not an expert on africans.
 

GrapeGuy

Feeder Fish
MFK Member
Jun 13, 2019
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Well I just suggest reading about the fish. You can use the search in the forum. I had africans a long time ago and only problem I had was balancing aggression. I am not an expert on africans.
Got it
 

LBDave

Peacock Bass
MFK Member
Nov 27, 2018
1,577
1,599
164
Long Beach
Well I just suggest reading about the fish. You can use the search in the forum. I had africans a long time ago and only problem I had was balancing aggression. I am not an expert on africans.
And when I say fish I mean the specific type of african. What water ph they like and potential tank mates/ aggression.
 
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neutrino

Goliath Tigerfish
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Jan 22, 2013
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pH 8.2 should be fine for nearly all common rift lake African cichlids. With the exception of some river species or some of the smaller or lesser known lakes, it's similar to their native pH. Actual mineral content varies between the lakes; for example Tanganyika is higher in magnesium than Malawi, but an exact match to native water isn't necessary and this is true of most fish we keep.

50% water change is not excessive at all under normal circumstances. The notion that you can never change too much water is generally true, but there are exceptions and other considerations, some of them depending on what's in your tap water. You can have perfect local water where the (generally) impractical ideal would be to have an open system-- clean water flowing through the tank on a constant basis. But you can also have problematic local water, better served by allowing your tank ecology to stabilize, or even clean, your tap water, and not 'overdoing' water changes. I've had both excellent and problematic local water. There's no one size fits all rule here.

Then there's parameters. If your local water suits your fish with no adjustments, that's one thing. If you need to adjust your water for your fish-- and, despite the horror some have of managing water parameters, It IS NOT A SIN to do so and can easily be managed in many cases, just a matter of knowing what you're doing, or a bit of tinkering to arrive at a reasonable routine. I've done it for 20 years in my current residence to make my 6.0-6.6 pH well water fit for frontosa and other Africans, including adding a bit of magnesium for kapampa gibberosa. In Florida my water was perfect as is for a variety of fish, in New England I lowered pH for blackwater tanks. In Chicago as a kid... well, I wasn't sophisticated enough about water chemistry to know much different.

...The point of the above being if you do adjust your water to suit your fish, do you really want to do this every day, every second day, or several times per week if it's not necessary?

And that's my larger point. How much water you can change is one thing. How much you need to change is something else entirely, and this varies between different setups, stock lists, and locales. Do some reading in planted tank communities and you'll see some of them change little water and/or at lengthy intervals, lot of plants, not many fish, expertise with water flow, filtration, nutrient dosing for the plants, etc. allow them to do this-- don't try this with your Oscar, or a tank crowded with haps and peacocks... :)

The paradigm of immense water volume or flow doesn't apply to all natural aquatic ecosystems and fish species, including the Amazon region-- there are ponds, oxbow lakes, even ditches that don't receive weekly 'water changes'. None of this is against water changes, high volume water changes, or frequent water changes-- Again, I'm saying one size doesn't fit all.
 
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PYRU

Probation Member
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Apr 8, 2015
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It depends on your parameters but there's no harm in multiple changes.

I do multiple smaller changes throughout the week, but im feeding mini woodchippers

I slacked off on the WC's because of the recent remodeling. My poor fish are suffering, and I am too. I have to move fish too, which will stress them more. This upscaling business is more costly than just money. Time to get the hose. . . .
While you're rigging up your elaborate sump run a drip or auto wc system.
 
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