Using RODI water? - The Planted Tank Forum
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post #1 of 8 (permalink) Old 11-20-2018, 07:25 PM Thread Starter
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Using RODI water?

I am converting my 120 gallon reef tank to a freshwater tank (and getting a 180 for reef)

My sons have a little 6 gallon FW tank in their room that I started and have been top off entirely with RODI water. The tank has a couple of LEDS in the hood and has been doing a great job of growing anubias, crypt and java fern.

Our tap water (well) is horrible.

When I start the 120, can I use RODI exclusively and grow east low light plants? I am finding conflicting info on the internet.

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post #2 of 8 (permalink) Old 11-20-2018, 07:56 PM
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Lots of people use RO/RODI water without any issues. Just make sure to add some KH/GH and the plants will be happy.

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post #3 of 8 (permalink) Old 11-21-2018, 12:10 AM Thread Starter
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Thanks! What is the best way to add that?

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post #4 of 8 (permalink) Old 11-21-2018, 01:49 AM
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Originally Posted by GOSKN5 View Post
Thanks! What is the best way to add that?
You can buy GH boosters like Seachem Equilibrium or just make your own cheaply and easily.

Most GH boosters are just a combination of CaSO4 and MgSO4, and some add some K2SO4 in as well.

Look up DIY GH booster. TONS of info available


Edit: Looks like I forgot the DIY KH haha. As @Maryland Guppy said, baking soda works. You can also use KHCO3 or K2CO3 if you want to avoid the sodium in baking soda.
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Last edited by MCFC; 11-21-2018 at 02:21 AM. Reason: .
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post #5 of 8 (permalink) Old 11-21-2018, 02:09 AM
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I purchase GH booster here NilocG.com
First I kind of frowned @ this product being in big chunks.
Dissolving in Brute cans I wan't it finer.
But now I just weigh out a lump/rock close to what I want and toss in behind the corner filter.

For KH I've been using baking soda.
Small quantity for me only wanting a KH of .5 - 1.0
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Growing is not that difficult.
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post #6 of 8 (permalink) Old 11-21-2018, 02:16 AM
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Quote:
Originally Posted by Maryland Guppy View Post
I purchase GH booster here NilocG.com

First I kind of frowned @ this product being in big chunks.

Dissolving in Brute cans I wan't it finer.

But now I just weigh out a lump/rock close to what I want and toss in behind the corner filter.



For KH I've been using baking soda.

Small quantity for me only wanting a KH of .5 - 1.0


Yeah I thought that was kind of annoying too. But a few seconds in a blender fixes that, or you could use a butter knife to break it up and turn it into powder and it should stay that way if it stays dry.


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post #7 of 8 (permalink) Old 11-21-2018, 02:18 AM
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Yeah I thought that was kind of annoying too. But a few seconds in a blender fixes that, or you could use a butter knife to break it up and turn it into powder and it should stay that way if it stays dry.
Just dumping the rocks in the corner filter saves so much energy.

If the target KH is low baking soda works.
If I were targeting over 1dKH or so I would choose a different compound.
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Last edited by Maryland Guppy; 11-21-2018 at 02:43 AM. Reason: edit
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post #8 of 8 (permalink) Old 11-21-2018, 03:48 AM
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I use RO water for my 120G tank.

Various methods out there.

I use CaSO4 and MgSO4 for GH. Once you have no bricks to break apart, you will wonder why you ever bought a GH Booster.

K2CO3 for KH. But KHCO3 is fine too.

Lots of ways to do it. Pick one and you will be fine. Much bigger fish to fry in the scheme of things.

My advice is to learn how to use Rotalabutterly of Zorfox calculator. Learn how to dose for your targets.

And start a journal for the 120G planted. I'd like to follow along and see what you come up with.

Good luck with everything, and look forward to learning more about your tank.


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