GH/KH and RO water - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 12-18-2008, 03:44 PM Thread Starter
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GH/KH and RO water

I'm going to be using RO for my Mini M as we have really hard water and I love soft water plants. Would it be best to buy equilibrium or jsut us baking soda to adjust? I will be treating 5g at a time and want about 2-3 gh and 3-4 kh, ph will be lowered with pressurized CO2 and the AS Amazonia.

Tap water here is PH 8.2, KH4, GH8- city adds ammonia to the system and softens the water aswell. I've had alot of problems with the tap and am thinking I shouldn't mix it even though I have in the past.

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post #2 of 6 (permalink) Old 12-18-2008, 04:13 PM
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Equilibrium/GH Builder and baking soda do not adjust the same parameters, so it isn't a 'one or the other' type of thing.

Equilibrium will increase your general hardness by adding calcium and magnesium (and some other minerals). Baking soda increases carbonate hardness by adding, well, bicarbonates, that's what effects your pH.

Thus, if you want 2-3 GH and 3-4KH, you'll need to use both.

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post #3 of 6 (permalink) Old 12-18-2008, 04:18 PM Thread Starter
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Quote:
Originally Posted by imeridian View Post
Equilibrium/GH Builder and baking soda do not adjust the same parameters, so it isn't a 'one or the other' type of thing.

Equilibrium will increase your general hardness by adding calcium and magnesium (and some other minerals). Baking soda increases carbonate hardness by adding, well, bicarbonates, that's what effects your pH.

Thus, if you want 2-3 GH and 3-4KH, you'll need to use both.
Thanks, I new I would need 2 different things I am just brain dead today as to what I needed.

Thansk

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post #4 of 6 (permalink) Old 12-19-2008, 01:54 AM
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Why not adjust your gh and kh by adding some of your un-RO'd water back into the purified water. You should be able to come of with a ratio of one to the other with some experimenting or calculating.


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post #5 of 6 (permalink) Old 12-19-2008, 02:02 AM Thread Starter
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Why not adjust your gh and kh by adding some of your un-RO'd water back into the purified water. You should be able to come of with a ratio of one to the other with some experimenting or calculating.
I can mix it 50-50 ro tap and get the right mix but the water here has been very unstable after record flooding this year destroyed the water treatment plant and 4 of the towns 6 wells. google cedar rapids iowa nad you can see what I mean.

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post #6 of 6 (permalink) Old 12-19-2008, 10:08 AM
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oooh, that could be a problem. You could buy the dry powders and make your own and save some money.


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