Hardness Question - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 03-19-2016, 05:48 PM Thread Starter
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Hardness Question

So I have a 46 gallon bowfront aquarium with

2x Angels
2x Dwarf Gourami
2x Bristlenose Pleco
2x Julii Cory (Used to have 4)
5x Harlequin Rasbora
10x Neon Tetra
3x Assassin Snails
40x MTSs

Current water parameters

Ammonia 0
Nitrite 0
Nitrate 0
PH 7.8
GH/KH 6
CA 70 ppm (added for snails)

So my question is I bought 4 Juliis and a week ago 1 had died, and today another had died. Prompting my to do a water test both times as you can see my water is good I think my PH is a little high. But I had read somewhere that my GH/KH should be around 10-15 which I think is insanely high. I guess I wanna know your thoughts on that?

Thanks
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post #2 of 3 (permalink) Old 03-19-2016, 06:18 PM
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Always include the units. GH and KH are measured in several formats. I assume you are reporting German degrees of hardness?

Neither GH nor KH should be that high (10-15 degrees) with your fish list.
GH for most of those fish are in the single digits, I would say 3-9 is probably acceptable for them (though you should look up each fish and check the optimum parameters, including temperature)
KH should be at whatever level it needs to be to maintain the optimum pH. Often the water company will add something to the water to keep the pH up. Acidic water is bad for the pipes. You could add some peat moss to see if that will lower the pH.
When in doubt, if the KH = GH plus or minus a degree or so, that is usually a good target to aim for.

I would not try to alter the GH or KH in this tank, with these fish.
Are you also adding a bit of magnesium? Plants use calcium and magnesium in a ratio of about 4:1. The water does not have to have this exact amount, but something close would be good.

GH and KH are separate tests, and check different things. No need to combine the results.
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post #3 of 3 (permalink) Old 03-19-2016, 09:37 PM
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Tangent, but show a photo of your julli cory? My lfs sell false julleis(aka three-lined cory) as true jullies
I have 8 in a 55g pH 7.5, tds 210 ish, gh and kh 30 and 70 ppm gh/kh, tank temp 76F.

false julli
Corydoras trilineatus (Three-lined Cory) ? Seriously Fish



True julli
Corydoras julii ? Julii Cory ? Seriously Fish

Due to photobuckets new bs cost for use of images on forums I have deleted all photobucket accounts. I apologize if you enjoyed or found my photos helpful.
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