Serious Water Issues - TDS 2200 - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 01-10-2016, 05:02 PM Thread Starter
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Exclamation Serious Water Issues - TDS 2200

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I have a Fluval Edge with a handful of plants running a nano canister with some decent LED's for lighting that I am having an issue with.

I had a few fish die and I could not see any issues with the water so I used an API strip test kit and a TDS meter and discovered the following:

GH- dark purple, 180
KH - around 40
PH- below 6
TDS - 2200

I just did a 25% water change last night and today its still high. The fish are lethargic and my 5 cherries have died.

Any ideas on how to fix the issue?


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post #2 of 10 (permalink) Old 01-10-2016, 05:25 PM
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What kind of fish do you have? What is their optimum GH?
Always include the units when you are reporting test results.

You need to approach it slowly. Fish cannot tolerate too fast a drop in TDS.
I would set up a series of water changes that will drop the TDS no more than 10% with each water change, and do no more than 2 of these per week.
Lets say you use RO, and do not add anything to it.
A 10% water change would drop the TDS 10%. Simplest way to handle it.
If the aquarium needs larger water changes for any other reason, then test the water and set up the new water to match the current parameters. (TDS, GH, KH)
Do not add anything to the tank that would add a lot to the TDS. If you are doing the EI fertilizer method, I would cut the dosing to perhaps 1/4 or less, or else switch over to the PPS-pro system.

The other problem is that when the pH is under 6, and the KH so low, the nitrifying bacteria are not very active. I would try to raise the KH just a little bit, hoping to get the nitrifying bacteria population back up. Add potassium bicarbonate or sodium bicarbonate to the water to raise the KH perhaps 1 German degree of hardness with each water change. See what 1/4 tsp of either will do for you, perhaps a rounded 1/4 tsp. If you can get the KH up to about 5 German degrees of hardness that ought to be enough. Monitor the ammonia. While the pH is really low, ammonia is in the charged form, ammonium, and the fish can keep most of this out of their system. As the pH rises more of the ammonia is actually ammonia, and is toxic to the fish.

I see in your signature a link to a 20 long. In that thread you discuss CPDs. Did you end up with them?
Celestichthys margaritatus ? Celestial Pearl ?Danio? (Danio margaritatus) ? Seriously Fish
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post #3 of 10 (permalink) Old 01-10-2016, 05:33 PM Thread Starter
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Thank you for the response Diana. My fish are indeed CPD's

The 20L is now retired and I only have the Edge

I will start with an RO 10% water change today since my LFS sells RO by the gallon. I will also add some sodium bicarbonate as well.


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post #4 of 10 (permalink) Old 01-10-2016, 06:29 PM
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Is your high TDS from your tap water, or is something dissolving in your tank that increases the TDS? If something is dissolving, then you need to eliminate it, as water changes are only a temporary fix.
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post #5 of 10 (permalink) Old 01-10-2016, 06:34 PM
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Are you on a well?

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post #6 of 10 (permalink) Old 01-10-2016, 06:36 PM Thread Starter
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Quote:
Originally Posted by Mark Fisher View Post
Is your high TDS from your tap water, or is something dissolving in your tank that increases the TDS? If something is dissolving, then you need to eliminate it, as water changes are only a temporary fix.
unsure, I did remove a dying fern last night.

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Are you on a well?
City water, no well


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post #7 of 10 (permalink) Old 01-10-2016, 06:41 PM
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Have you ran those tests on your tap water? Do you go straight from the tap? Or is the water stored before water changes?

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post #8 of 10 (permalink) Old 01-10-2016, 06:44 PM Thread Starter
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Quote:
Originally Posted by The Big Buddha View Post
Have you ran those tests on your tap water? Do you go straight from the tap? Or is the water stored before water changes?
TDS is 500 on the tap water. I use a tap water conditioner and add it direct


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post #9 of 10 (permalink) Old 01-10-2016, 06:50 PM
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Can you post some tank pics? What substrate? Any coral or shells in the tank? Any new additions to the tank?
How long has it been setup? What does the tap GH,KH and PH test at? Do you have a water softner?

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Last edited by The Big Buddha; 01-10-2016 at 06:52 PM. Reason: Fix
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post #10 of 10 (permalink) Old 01-12-2016, 01:23 AM Thread Starter
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Tank pic as requested

Substrate - eco complete, no shells, no corals. it has been live for a year.

Tap tests are incoming later tonight
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