I need some assistance please. Question about lowering my gh. - The Planted Tank Forum
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  • 4 Post By ed.junior
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post #1 of 9 (permalink) Old 03-27-2017, 05:31 AM Thread Starter
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I need some assistance please. Question about lowering my gh.

How would I go about lowering my gh in my aquariums? right now its off the charts. Over 400 ppm. Any help or suggestions would be greatly appreciated.

Nine times out of ten it's a humbug.
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post #2 of 9 (permalink) Old 03-27-2017, 05:48 AM
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Is there a reason you need to lower it? I have over 400 ppm GH as well and all of my fish, shrimp, and plants do fine. That said, if you really need to lower it the only good way is to start with RO water. That means either buying it by the jug at a store for every water change, or purchasing a RO unit which can be pretty pricey.
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post #3 of 9 (permalink) Old 03-27-2017, 06:24 AM Thread Starter
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I'm mainly worried about my CRS and neos my plants and fish are doing amazing.

Nine times out of ten it's a humbug.
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post #4 of 9 (permalink) Old 03-27-2017, 07:56 AM
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GH is basically a measure of divalent metal ions, mostly Ca++ and Mg++.

What you need is to remove that, and avoid adding it back. As mentioned above, RO water is the common way to go. It wastes some water and takes a while, but then you have very soft water, that needs to be remineralized, up to the desired levels.

I would only go for it if you are 100% sure. It is very straightforward, but does involve some effort.

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post #5 of 9 (permalink) Old 03-27-2017, 09:39 AM
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Like others, I would be sure it is a problem before you fix it. Battling any parameter related to your base water makes keeping difficult and can set you up for swings in the future which can be worse than the symptom you were treating to begin with.
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post #6 of 9 (permalink) Old 03-27-2017, 09:24 PM Thread Starter
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Quote:
Originally Posted by Attackturtle View Post
Like others, I would be sure it is a problem before you fix it. Battling any parameter related to your base water makes keeping difficult and can set you up for swings in the future which can be worse than the symptom you were treating to begin with.
Basically I have lost three of my CRS all SS grade no entry Hinomaru. Not bad but I don't like losing any of my shrimp.
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Nine times out of ten it's a humbug.
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post #7 of 9 (permalink) Old 03-28-2017, 02:10 AM
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What are your other parameters other than GH? Ask because if you lower using RO you will want to ensure the other parameters are good and now too low


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post #8 of 9 (permalink) Old 03-28-2017, 02:43 AM
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Yeah, CRS don't do too well in water with a GH over 105ppm (roughly 6 dGH). The hardest part is that with a dGH of 22 like you have, you don't know how much of that is calcium.

For a smaller tank (20 gallon and under), I'd just go full RO and remineralize it to around 6 dGH. For anything larger, I'd mix your water with RO to hit around 105ppm

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post #9 of 9 (permalink) Old 03-28-2017, 03:13 AM
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1.) Go out and purchase a tank to set up for your Crystal Shrimp (10 gallon preferably)
2.) Purchase a buffering substrate (SL-Aqua is a great price from Discobee! If in the USA!)
3.) Cycle tank with RO water and "pure" Ammonia (no detergents or dyes) - ~3-4 weeks
4.) Once tank is cycled, perform a 90 or 100% water change with RO water and a GH+ remineralizer
5.) Acclimate Crystal Shrimp to water


Neos are fine on plain sand and tap water. If you have hard tap water, then mix tap with RO (about 3.5-4 parts RO to 1 part tap) to get desirable parameters for them.



Make sure you have the following products:
API Freshwater Master Test Kit *OR* Sera Aqua-Test Set for Saltwater & Freshwater (does not include Nitrate test)
API GH & KH Test Kit *OR* Sera Aqua-Test Set for Saltwater & Freshwater
TDS Meter


At minimum, you only need 2 things, max 3.
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