No CARBON??? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 17 Old 03-14-2012, 03:51 PM
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There is no scientific data that I have seen to counter the need for regular water changes, regardless of the filtration. Nitrates is not a "test" for water changes, whatever this individual from Aquaripure may claim.
And as you know, there is no scientific data that requires 50% weekly water changes. Since discovering very high nitrates in my well well water, I'm having to rethink filtration and water changes or abandon the hobby.

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post #12 of 17 Old 03-14-2012, 05:25 PM
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Originally Posted by AbbeysDad View Post
And as you know, there is no scientific data that requires 50% weekly water changes. Since discovering very high nitrates in my well well water, I'm having to rethink filtration and water changes or abandon the hobby.
There is plenty of evidence on the positive effects of regular water changes, that was my point. There is none that says fish are better off without water changes but relying on this fancy stuff.

Nitrates in the source water is an issue. I would look into one of the products that handle nitrates for the filter.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #13 of 17 Old 03-14-2012, 06:02 PM
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IMHO carbon is something filter companies try to sell you to make money. I used to use it with all my tanks when I first got into the hobby 10 years ago. I took a couple of years off and just got back into it 3 years ago, since then I have not used carbon in any of my tanks. There really is no substitute for regular water changes.
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post #14 of 17 Old 03-14-2012, 08:35 PM
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There is plenty of evidence on the positive effects of regular water changes, that was my point. There is none that says fish are better off without water changes but relying on this fancy stuff.
Nitrates in the source water is an issue. I would look into one of the products that handle nitrates for the filter.
In addition to developing a DIY Bio nitrate filter, adding floating plants, several bottled water changes, I have used Fluval Lab Series Nitrate Remover (FNR) in the tank filter to bring tank nitrates from 60-80ppm down to 5ppm!
In addition I purchased an API Tap Water filter to make DI water for water changes.
It is my belief that with the other measures I've put in place, prudent tank/filter maintenance, careful feeding and the possible periodic use of products like activated carbon, Seachem Purigen and FNR, I should be able to reduce the volume and/or frequency of water changes with deionized water and in the end have a healthier more vibrant aquarium than would otherwise be the case....even compared to larger weekly water changes. In the end, it's all about the (aquarium) water column purity.
So I don't dispute that routine water changes with quality water are beneficial, however I can no longer afford 50% weekly water changes. As much as it was 30 years ago, activated carbon is still a useful tool in water purification. As a matter of fact, the first four to six inches in the API Tap Water Filter Cartridge is activated carbon.

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post #15 of 17 Old 03-14-2012, 11:44 PM Thread Starter
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Originally Posted by lorax84 View Post
IMHO carbon is something filter companies try to sell you to make money. I used to use it with all my tanks when I first got into the hobby 10 years ago. I took a couple of years off and just got back into it 3 years ago, since then I have not used carbon in any of my tanks. There really is no substitute for regular water changes.

Lorax, so you use the Purgen as well?
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post #16 of 17 Old 03-15-2012, 12:21 AM
Egrant - Seachem Purigen is a good product (I have used it and have 2 100ml packets ready for re-use). However, it is limited to adsorbing dissolved organics whereas carbon adsorbs other types of impurities. Seachem Tech support encourages using both Purigen and activated carbon together.
Seachem Tech support also advises not using Purigen until the tank/filter have properly cycled.

Regarding purigen - Seachem Support Forums

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post #17 of 17 Old 03-15-2012, 01:34 PM
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Lorax, so you use the Purgen as well?
I use plants. Even my bare bottomed pleco tanks have large clumps of floating plants in them . Were I to keep Oscars or Mbuna again I may look into it. Even when I did keep them I never used carbon, just bio and mechanical filters and regular water changes.
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