Alkalinity....should I be worried. - Page 2 - The Planted Tank Forum
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post #16 of 31 (permalink) Old 02-01-2020, 03:03 AM
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I would do a 50% WC with RODI and add a GH booster to bring tank up to 4-6dGH.
Wait a day or two and test water again.

I wold not even acid dose a tank with that high an alkalinity, too much chloride would be left behind.

What were the NO3 levels? High doesn't say much.
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post #17 of 31 (permalink) Old 02-01-2020, 03:19 AM Thread Starter
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I would do a 50% WC with RODI and add a GH booster to bring tank up to 4-6dGH.
Wait a day or two and test water again.

I wold not even acid dose a tank with that high an alkalinity, too much chloride would be left behind.

What were the NO3 levels? High doesn't say much.
The nitrate level on the test strip was the darkest red that the chart had which is 200

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post #18 of 31 (permalink) Old 02-01-2020, 03:26 AM
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For my KH, I am going to go back to using my RO/DI unit and see if that makes a difference.
If your membranes are in good shape it should bring KH to 0. I'd remineralize your RO for water changes with only GH, assuming you're leaving some tank water in there. Depending on how fragile of life you keep, might want to do that gradually over the course of several partial water changes.

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Does anyone have an idea to help bring down my nitrates??
Water changes and plant growth are the best ways. Assuming you are using fertilizers, don't add any NO3, obviously.

Nothing good happens fast in an ecosystem.
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post #19 of 31 (permalink) Old 02-01-2020, 03:35 AM Thread Starter
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Originally Posted by Maryland Guppy View Post
I would do a 50% WC with RODI and add a GH booster to bring tank up to 4-6dGH.
Wait a day or two and test water again.

I wold not even acid dose a tank with that high an alkalinity, too much chloride would be left behind.

What were the NO3 levels? High doesn't say much.
The nitrate level on the test strip was the darkest red that the chart had which is 200

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post #20 of 31 (permalink) Old 02-01-2020, 03:41 AM Thread Starter
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Originally Posted by Blue Ridge Reef View Post
If your membranes are in good shape it should bring KH to 0. I'd remineralize your RO for water changes with only GH, assuming you're leaving some tank water in there. Depending on how fragile of life you keep, might want to do that gradually over the course of several partial water changes.
I am buying all new filters and a new membrane. The others were old and needed pitched. My new stuff will hopefully be here by the end of next week.

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post #21 of 31 (permalink) Old 02-01-2020, 03:44 AM
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The nitrate level on the test strip was the darkest red that the chart had which is 200
I have not been following much and do not know what phish you keep.
Phish of many varieties can grow accustomed to high NO3 levels.
Some others may bash me for this but I would slowly bring down NO3 through WC's in this case.
Maybe bring a tank with say 200ppm NO3 down to 20ppm NO3 over the course of 6-12 weeks.
Quick changes in this case may not be good for phish health at all.


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post #22 of 31 (permalink) Old 02-01-2020, 06:08 PM
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What is the “whole home filter system”? A water softener system?
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post #23 of 31 (permalink) Old 02-01-2020, 11:17 PM Thread Starter
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What is the “whole home filter system”? A water softener system?
Look up Puronics Filter. It only uses softner salt to regenerate and clean the filter media inside the filter tank.

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post #24 of 31 (permalink) Old 02-03-2020, 09:53 PM
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It’s a sodium based ion exchange softener that removes all/most of the Ca/Mg ions from water and replaces them with sodium. Alkalinity is high because of all the sodium carbonate and sodium bicarbonate in the water now.
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post #25 of 31 (permalink) Old 02-03-2020, 10:55 PM
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@dewalltheway Dave beat me to it, I figured there was a softener involved with high KH and 0 GH. So you're running a carbon filter prior to the softener, correct? And are you running standard GAC, or a catalytic carbon filter? Makes a difference if your water company adds chloramine. A typically GAC filter will not be effective against chloramine, and breakthrough will lead to your softener resin being destroyed, as well as fish death from incomplete treatment.

I would go back to using RODI water and remineralizing that. This is what I do, as my home has a large whole home catalytic carbon tank and salt based softener as well, and my water would not be suitable for the plants I want to grow at all or for shrimp keeping. The RO membrane does an excellent job of removing sodium, so it will bring down the KH to zero. Then, you can add back just a bit of carbonate, say 1 dKH from NaHCO3(baking soda), K2CO3 or KHCO3. You'll also need to add back GH as was recommended by Maryland Guppy
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post #26 of 31 (permalink) Old 02-04-2020, 02:36 AM Thread Starter
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Thanks for the input all. I am waiting on my new RO/DI filters and new membrane to arrive. Should be here Friday, I hope, and then hopefully get things back to where they should be.

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post #27 of 31 (permalink) Old 02-06-2020, 02:27 AM Thread Starter
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Received my filters today for my RO/DI unit. Now just need my membrane filter and I can get some water made. Hoping it comes Friday.

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post #28 of 31 (permalink) Old 02-06-2020, 02:50 PM
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I was using tap water that ran through a home water softener and learned that is detrimental to fishes osmotic function. My fish were losing scales and one by one dying. I didn't know much about gH and kH and then i found these two websites below. It has been a total game changer for me and my fish have fully recovered in the last year. Haven't had a death in at least 18 months and no illnesses. I point people to it all the time, I hope it helps I'll admit it, I really nerded out too and spent HOURS reading because there is so much info.


https://www.aquarium-pond-answers.co....html#softener

Aquarium Chemistry | Calcium & KH & GH & pH & Electrolytes (ions)

https://www.aquarium-pond-answers.co...ish-drink.html

https://www.aquarium-pond-answers.co...aquariums.html
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post #29 of 31 (permalink) Old 02-13-2020, 12:05 AM Thread Starter
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Update....I received my filters and membranes for my RO/DI unit and filtered 55 gals. I tested it and everything was at zero. So I added 6 tsp of GH Booster from GLA, 3 tsp of baking soda (to raise KH) and 3 tsp of Neutral Regulator. After letting it set, I tested again and the GH was at 4, KH between 5&6 and PH around 7. I did a water change and then filtered more water and repeated what I did and did another water change a few days later. My tank as of tonight tests the GH at 2, KH at 6 but my nitrates are still high but not as high as before my WC's. The fish seem happy and the water is clear. I will do another WC this weekend.

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post #30 of 31 (permalink) Old 02-19-2020, 10:16 PM
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The titration test kits for KH actually test for alkalinity. So yes.
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