GH Levels - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 04-02-2014, 11:51 AM Thread Starter
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GH Levels

Hi all I have just done a 1/3 water change on my tank and with that I've done my water tests.

2 issues I came across and 1 I don't really know how to fix.

My Ph was a little elevated (7.0-7.3 range, did the water change 2 days late and I think my filter may be a little small?)

But my main issues is my GH is off the chart....like 400ppm...:-(

I have all fish that require soft water and at this stage it's clearly not soft.

Does anyone know the best way to safely lower the GH over time without affecting / stressing the fish?

I have Clown Loaches, Flying Foxes, Neon Tetras and Black Widow Tetras.

My numbers were
PH between 7.0 - 7.3
Ammonia 0.1
Nitrites 0
KH 4 drops (3-6 drops 50-100ppm)
GH 21 drops (11-22 drops 200-400ppm)
Temp 26

Thanks in advance


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post #2 of 9 (permalink) Old 04-02-2014, 03:04 PM
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You can slowly lower the GH with a mix of tap/RO (or distilled) water.

Anthony


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post #3 of 9 (permalink) Old 04-02-2014, 03:34 PM
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Quote:
Originally Posted by Hazcat View Post
Hi all I have just done a 1/3 water change on my tank and with that I've done my water tests.

2 issues I came across and 1 I don't really know how to fix.

My Ph was a little elevated (7.0-7.3 range, did the water change 2 days late and I think my filter may be a little small?)

But my main issues is my GH is off the chart....like 400ppm...:-(

I have all fish that require soft water and at this stage it's clearly not soft.

Does anyone know the best way to safely lower the GH over time without affecting / stressing the fish?

I have Clown Loaches, Flying Foxes, Neon Tetras and Black Widow Tetras.

My numbers were
PH between 7.0 - 7.3
Ammonia 0.1
Nitrites 0
KH 4 drops (3-6 drops 50-100ppm)
GH 21 drops (11-22 drops 200-400ppm)
Temp 26

Thanks in advance
Hi Hazcat,

Peat can be used to effectively lower hardness (both dKH and dGH). The peat will bind with the calcium and magnesium ions to help lower dGH. At the same time it releases acids (gallic and tannic) which break down the bicarbonates in the water which reduces the water's dKH (carbonate hardness) and PH. Peat moss is added to a media bag and placed in the filter where the water is forced to flow through it. How much to use would depend on the water volume to be treated. I recommend starting with a small amount and see what the effect is after a week. Using peat moss will add tannins to the water turning it yellowish; this condition can be corrected using Seachem Purigen to remove the tannins.

RO (reverse osmosis) water is an alternative as well however I would avoid distilled water unless I could insure it was not distilled using copper coils which could possibly impart copper ions into the treated water.

Roy_________
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post #4 of 9 (permalink) Old 04-02-2014, 04:23 PM
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Before you do anything about the high GH you should try to verify that the GH test kit still works ok. GH test kits tend to start giving very high readings, as I recall, when they age a bit. I found, with 2 different API GH kits, that I couldn't really get a good reading at all, and one of those kits was only a few months from its manufacturing date.

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post #5 of 9 (permalink) Old 04-04-2014, 10:08 PM Thread Starter
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Thank you so much for this tip, bought a new kit and my GH is actually 8 drops just about 50ppm which is not nearly as scary.

Chers


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post #6 of 9 (permalink) Old 04-05-2014, 03:16 AM
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8 drops is

8 x 17.9 = 143 ppm.

Not nearly as bad as the over 200 it had seemed.
Still, those fish may like the organic acids that peat adds to the water. I run peat in several tanks.
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post #7 of 9 (permalink) Old 05-20-2014, 05:36 AM Thread Starter
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Quote:
Originally Posted by Diana View Post
8 drops is

8 x 17.9 = 143 ppm.

Not nearly as bad as the over 200 it had seemed.
Still, those fish may like the organic acids that peat adds to the water. I run peat in several tanks.

What's peat?

Our tank is running so awesome atm no deaths, plants doing well (only have java fern) and water parameters are all brilliant except for an unexpected temp spike due to unusually hot weather here

Jut at a question though, SHOULD I have a nitrate reading? I always have 0ppm

Current numbers are

PH 6.8
Nitrite 0
Nitrate 0
Ammonia 0
KH 3
GH 3
Temp currently sitting 26.1C


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post #8 of 9 (permalink) Old 05-20-2014, 05:47 AM
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Peat often refers to sphagnum peat moss.

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post #9 of 9 (permalink) Old 05-20-2014, 10:16 AM Thread Starter
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Peat often refers to sphagnum peat moss.

Thanks loads


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