My fish keep dying one by one - Page 5 - Tropical Fish Keeping - Aquarium fish care and resources
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post #41 of 49 Old 03-14-2018, 07:14 PM
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Everyone else says keep the pH lower.

The consensus I find is that 6.5 is fine, although close to the upper range for this species. I won't point out that tetras and discus are not closely related. I think this bbob guy is talking out of his swim bladder, and I would never try to acclimate a fish to a pH that is 3 points higher than everyone else in the world, (and who has not owned neons?) has.
The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6.
So, he is saying this fish can withstand 1000 times the pH? Not buying it.
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Originally Posted by aussieJJDude View Post
If acclimatised, I can't see the problem? People have/do keep discus in high pH and they do fine, why wouldn't the humble tetra do otherwise? As long as the fish aren't wild caught, I do believe that they can be acclimatised to different conditions correctly.

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post #42 of 49 Old 03-14-2018, 07:20 PM
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I rely on demonstrable, repeatable results, because my fish do as well. I have tried to wing it, or guess, in the past, but have learned my lesson. I won't take some guy's advice that goes against the grain of commonly accepted practices. There are people here that I will consider as authoritative, but bb is not one of them.
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post #43 of 49 Old 03-14-2018, 07:50 PM
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Bob Iíve seen no data indicating that a pH of 6.5 translates to a deadly low oxygen environment. The only data youíve presented to support your claims is in the form of a chart for marine tanks with a pH of 7.8-8.7.

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
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post #44 of 49 Old 03-16-2018, 12:13 PM
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Bob Iíve seen no data indicating that a pH of 6.5 translates to a deadly low oxygen environment. The only data youíve presented to support your claims is in the form of a chart for marine tanks with a pH of 7.8-8.7.
My point was the higher co2.

maintain Fw and marine system with a strong emphasis on balanced, stabilized system that as much as possible are self substaning.

have maintained FW systems for up to 9 years with descendants from original fish and marine aquariums for up to 8 years.

With no water changes, untreated tap water, inexpensive lighting by first starting the tank with live plants (FW) or macro algae( marine)

see: https://www.tropicalfishkeeping.com/a...-build-295530/
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post #45 of 49 Old 03-16-2018, 02:56 PM
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I think your point is buried beneath discarded pennies.

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
2.5 - betta
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post #46 of 49 Old 03-16-2018, 03:11 PM
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What Are the Main Causes of Low PH in an Aquarium? Pt. 1
talkfishy.com what-are-the-main-causes-of-low-ph
Some of the naturally occurring causes of a pH drop include excess carbon dioxide, tannins from driftwood and the nitrification stage of biological filtration.
In addition to excess carbon dioxide and tannins in the water, *a pH drop may also be caused by the nitrification stage* of biological filtration. Nitrification is the process through which beneficial bacteria in the aquarium convert ammonia to nitrite and then into nitrate.
So, if this was my tank, I would explore that possibility. You might be able to provide more history about the previous owner, but I'd want to look at that. We know CO2 causes acidification, but acidification is not only caused by CO2. Verify the problem and correct.
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post #47 of 49 Old 03-16-2018, 08:24 PM
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I'm kinda new to this forum. Edmo I would wait at least a week before I load anything else. The hardest part in recognizing a problem sometimes is patience. If nothing happens you won't lose anything except a few days. If a or two fish dies then the problem might still be there, and you'll be glad you did not load up on more fish.
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post #48 of 49 Old 03-16-2018, 08:39 PM
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agree

One of my favorite saying is, 'when you find yourself in a hole, stop digging.' Whether or not you are responsible, I like an anology between horses and ox. A team of horses can wreck a wagon if they get spooked. Ox tend to stop and sit down, and rarely stampede or panic. I like the ox approach. If I get any sense that I'm lost, I stop and ask for directions. I'd watch very closely and carefully consider any changes.
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I'm kinda new to this forum. Edmo I would wait at least a week before I load anything else. The hardest part in recognizing a problem sometimes is patience. If nothing happens you won't lose anything except a few days. If a or two fish dies then the problem might still be there, and you'll be glad you did not load up on more fish.
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post #49 of 49 Old 03-16-2018, 10:07 PM
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You make me sound like a Zen Buddhist. LOL!!!
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