Low Ph Killing shrimp - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 12-22-2013, 11:23 PM Thread Starter
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Low Ph Killing shrimp

Iv been losing both cherry and crs the past few weeks in my new setup. I cycled and established sufficient biofilm for 2 months before introduction. These were shrimp that did very well in the tank I bred them in prior so I was doing something right!

Now, after testing Ammonia, Nitrite, Nitrate, KH, Gh and TDS for the millionth time and after doing water changes but still losing shrimp. I decided to pull the PH probe from my other tank so that I could get a really accurate reading. The tank PH is 4 !! I think I found the problem!

What do you guys think I should do?

PS - The ph probe is reading accurately I tested it with a PH solution of ph7 and ph4.

Last edited by Fiftymeatballs; 12-22-2013 at 11:39 PM. Reason: ph
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post #2 of 7 (permalink) Old 12-22-2013, 11:48 PM
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:O (i have no idea but damn)
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post #3 of 7 (permalink) Old 12-23-2013, 12:16 AM
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Baking soda, seiryu stone, water changes, 3 options off the top of my head

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post #4 of 7 (permalink) Old 12-23-2013, 12:23 AM
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what substrate are you using?
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post #5 of 7 (permalink) Old 12-23-2013, 12:58 AM Thread Starter
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3/4 the tank is aqua soil new type the other 1/4 is ada cosmetic sand

It's all making sense now. I triggered this crash two weeks ago when for the first time ever I used distilled water instead of aged tap. I changed 2 gallons of the 10 using distilled and added salty shrimp to maintain a GH of 5. I guess the aqua soil buffer was not enough. When I introduced the shrimp last month the PH of the tank sat at 6.2-6.5.

My tap is around 60tds and KH is almost 0. It's very unstable I should have known better. My discus tank crashed last year when I added large pieces of drift wood. My bio filter died the ph was so low, what a PITA. I am going to buffer with baking soda very slowly to 1dkh. That should hold my PH stable and hopefully not bother the shrimp too much as long as I maintain 1dkh consistently :-/

Last edited by Darkblade48; 12-23-2013 at 03:02 AM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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post #6 of 7 (permalink) Old 12-23-2013, 06:03 AM
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I use Ada Amazonia, probably used 90% of a 9l bag in my tiny ten gallon (probably shouldn'tve used so much lol) and I use only ro/di water, my tank sits at ~6.4 ph ... Why do you think your soil is making your water so low?
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post #7 of 7 (permalink) Old 12-23-2013, 03:30 PM Thread Starter
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Most people who use RO water don't add 100% RO for this exact reason. They mix with some tap to add some KH naturally. Aquasoil does not add KH I believe it removes it. So the combo of aqua soil, very low KH tap and 0 KH distiller water caused my crash.

I added baking soda last night over a few hours, ph is 6.5 now and KH is 1. The shrimp are all out grazing around looking happy. I'm so relieved.
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