Turns out I have hard water! - The Planted Tank Forum
 
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post #1 of 15 (permalink) Old 01-08-2014, 01:13 PM Thread Starter
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Turns out I have hard water!

I wanted 6 - 8 ember tetras for my 24 litre, but my tap water results are as follows...

17.324 dH
305mg/l calcium carbonate
122mg/l calcium
3.05mmol/l

Guess this means I can't have tetras as they want soft water

I can't really afford bottled water or ro water so really, I need fish that will do okay in my water.

My tank is cycling atm, I haven't tested it yet.
The figures are from Anglian water.

Are there any fish I could keep in a 24 litre, hard water tank?
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post #2 of 15 (permalink) Old 01-08-2014, 01:16 PM
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Unless you have wild caught fish and want to breed them I'm not sure why you are stressing over your water.... I've kept soft water fish including wild caught discus in my tap water with a kh of 22 and Tds of 440+ and in pure RO. They were fine in both.
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post #3 of 15 (permalink) Old 01-08-2014, 01:22 PM Thread Starter
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No they are captive bred and no, I don't want to breed them but I want them to be as healthy and comfortable and long lived as possible.
Everything I have read on tetras says they need soft water and won't do well in hard water?
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post #4 of 15 (permalink) Old 01-08-2014, 02:12 PM
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When they are bred in captivity they are bred in tap water. It's cheaper, less work, and they need the minerals to develop. They will be fine, no worries.
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post #5 of 15 (permalink) Old 01-08-2014, 02:13 PM
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I have neon tetras in my tank and my water is basically liquid rock.
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post #6 of 15 (permalink) Old 01-08-2014, 02:26 PM
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+1 to pg92's comments. Tetras do fine in tap, pretty sure that whoever you are buying them from has them in the same water. Call the store and ask them.


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Last edited by xmas_one; 01-08-2014 at 03:12 PM. Reason: neons/tetras
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post #7 of 15 (permalink) Old 01-08-2014, 02:43 PM
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Small livebearers such as endlers prefer hard water so they would do quite well in your tank, but you would probably only want males if you didn't want it quickly overrun.

2 2.5s, 3 10s, 2 20s, 1 29. Low light, low tech. Ponds
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post #8 of 15 (permalink) Old 01-08-2014, 02:47 PM
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Quote:
Originally Posted by Mrs Behjet View Post
Are there any fish I could keep in a 24 litre, hard water tank?
Mine too is a hard water tank currently cycling fishless.
As suggested by few forum members a couple of weeks back, I plan to keep Livebearers - guppies, platys and rainbows (i heard that there are few types of rainbows that like hard water).

Last edited by svkr2k; 01-08-2014 at 02:57 PM. Reason: corrected
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post #9 of 15 (permalink) Old 01-08-2014, 02:47 PM
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Originally Posted by xmas_one View Post
+1 to pg92's comments. Neons do fine in tap, pretty sure that whoever you are buying them from has them in the same water. Call the store and ask them.
The owner of this lfs I work at kills more tetras by putting them into RO water. Not many people realize that most tetras are tank raised and kept in tap water. Just because a fish is a soft water fish (discus, angels, tetras, rams, ect.) doesn't mean the one you have came out of the amazon river or any soft water area. You will kill fish through osmotic shock if they came from tap and you put them into low tds water or vise versa.
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post #10 of 15 (permalink) Old 01-08-2014, 02:56 PM
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Quote:
Originally Posted by flukekiller View Post
I have neon tetras in my tank and my water is basically liquid rock.
just curious to know (i'm a newbee) ... assuming other water parameters/quality is perfect, will tetras kept in hard water tanks live as long as the ones kept in soft water tanks (i really dont know the recommended levels of water hardness, but i have heard it would survive longer in soft water tanks).
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post #11 of 15 (permalink) Old 01-08-2014, 03:20 PM
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You and I can wear shoes too small for our feet ,but we are much more comfortable in shoes that fit properly.
Fishes are sorta the same. Can be difference between often sickly fishes,or those that thrive.
Those that claim to keep soft water fishes in hard water with no issues may be the exception rather than the norm (how hard is their water ?) or..they may have managed to keep them but a few week's before the fishes began to do poorly and got sick and died.
They could also be flat lying.(lot's of this on internet).
Many tank raised specimen's that enjoy soft acidic water are bred in RO/tapwater mix,and when removed and placed in hard alkaline water,,they begin slow gradual decline.
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post #12 of 15 (permalink) Old 01-08-2014, 03:32 PM
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Originally Posted by Pg92 View Post
When they are bred in captivity they are bred in tap water. It's cheaper, less work, and they need the minerals to develop. They will be fine, no worries.
Many soft water species cannot breed in hard alkaline water.(egg's can't be fertilized due to hardness).
Most who attempt breeding softwater species do so in R/O or ,,R/O tapwater mix,and then slowly increase the hardness by using less and less R/O over day's,week's, in hopes that enough of the the fishes live long enough to sell to you or I.
Some soft water species are more adaptable than other's.
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post #13 of 15 (permalink) Old 01-08-2014, 03:32 PM
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Many species that are found naturally in soft water can survive in hard water. Where many issues arise is in coloration and sexual activity in these specimens. Their colors often appear washed out, and any activity that does occur ends badly as low Ph, soft water inhibits most bacteria and fungus. Those eggs laid in hard water tanks fall victim to contagions and symptoms that these fish never evolved for. Choosing fish with a similar water chemistry is a good idea, but can be difficult in smaller nano tanks. Some that I would recommend would be Psuedomugils, Dwarf Livebearers, Desert gobies and some Stiphodens, danios and look into Celestial Pearl Danios or the Emerald Rasbora. There are a variety of Killifish that are an option and even Ricefish could work if the tank size is appropriate. Neocaridina shrimp do well, as do some Sulawesi shrimp with a high enough temperature. There are a lot of options, but it will take a bit more searching. They can be far more fulfilling to keep as they are comfortable and exhibit more relaxed behavior.

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post #14 of 15 (permalink) Old 01-08-2014, 03:33 PM
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Yeah I know, it's not an issue here as she isn't worried about breeding
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post #15 of 15 (permalink) Old 01-09-2014, 10:39 AM
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Quote:
Originally Posted by svkr2k View Post
Mine too is a hard water tank currently cycling fishless.
As suggested by few forum members a couple of weeks back, I plan to keep Livebearers - guppies, platys and rainbows (i heard that there are few types of rainbows that like hard water).
Smart move. Go with fish that are most comfortable with the conditions you have. Soft water fish can do OK in hard water, but the fact that they'll only breed in soft water shows you the conditions they evolved in, and where they're happiest. You can't breed that out in a few generations of tank raising.

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