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PH keeps rising


Goco
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Hello Shrimp Keepers!

i have a tank (20 literes) for about 4 Months. The first 2 Months i used RO water with KH and GH Up Liquid. The Parameters were about PH 6,8 / KH 1.

The last 2 Months im just using RO Water with Salty shirimp GH + without any KH whatsoever. But after my Waterchange (50% Weekly), the PH still goes up to 6,8 after 24-48 Hours?

Can someone explain me please whats going on? Is the soil saving my previous KH from the first 2 Months? Im using Liquid Humin, allmond leafs and got Coral Moss, Phoenix Moos and HCC Cuba. Im not dosing any CO2.

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I assume you are using a (PH buffering) soil substrate and keeping caridina shrimp? A PH 6.8 and KH 1 is fine for usual caridina shrimp! Are the shrimp dying? Usuallly rock can cause PH/KH to increase but I assume you don't have any of that as you don't list that as in the tank? If you are using soil, it may have absorbed some of the KH and is slowly releasing it but that should reduce over time and if you only have KH1 that isn't a problem - I don't think you can actually measure KH 0 anyway with the usual test kits as each drop is +1 KH? It is possible to get smaller reading than 1 by altering the volume of water you test, double the water (10ml) each drop of tester fluid is then half a KH, double that again (20ml) and each drop will be quarter of a KH, but it isn't really necessary and wastes a lot of tester fluid  you could try it once though if you want a more accurate idea of exactly where the KH is, not to the nearest whole number.

I may not have grasped what your actually asking and I don't see any problem from the post but do feel free to ask again if I haven't understood?

Welcome to the forum by the way and hope you enjoy it!

Simon

Edited by sdlTBfanUK
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Sorry, yes you are right.  I have tropica powder Soil with Taiwan Bees. They are all healthy, no one is dying, buy my shrimp babys die off after maybe 2-3 weeks 😕 The only rock i have inside my tank is lava rock.

im asking, why the PH is rising, because im putting RO water with only GH salt inside the RO water. Still the PH is rising to 6,8 PH after maybe 24-48 hours. Im little bit concerned, because my RO Water has maybe 5,8 PH? and the difference is too high to raise that fast. Maaybe thats killing my baby shirmps? The high difference. But i dont want to put any KH anymore in my Waterchange water.

Thank you so much for your help 😃

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Shrimps aren't very high bioload so you should probably reduce the weekly water change to no more than 25% and the new water will need to be dripped into the tank over many hours. I haven't used salty shrimp but I have heard it usually comes out about 6.8 so I don't think that is a problem. It is more likely to be you are changing too much water which has that PH difference of 1 may be too much for the babies to cope with. Lava rock won't alter the PH/KH so thats fine.

Just do 20-25% weekly water changes, adding the ew water with a driper and I think you will be fine. I would probably get some baby shrimp food as well and that will be a powder,, so use a pin, dip the tip 2-3mm in to the tank quickly to wet, then in the powder and then swirl that in the tank so it spreads around. It is a fairly small tank so there may not be quite enough natural biofilm (caution not to over feed though).

Simon

 

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Allright thanks, ill do 25% Waterchange weekly, i have many poweder food here, that should be working 😃 Thanks. Im already dripping my water, one litre per hour.

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7 hours ago, Goco said:

Im little bit concerned, because my RO Water has maybe 5,8 PH?

Let the RO water sit for 24hours before testing pH. That will give you the true pH level.

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    • sdlTBfanUK
      There isn't much to report on this at the moment, I am 50/50 as to whether this is going to work or not long term. I have seen 2 dead shrimp since adding the new ones and counted about half of the new shrimp bought, that I saw yesterday! This is going to be a long term experiment I guess, the best I hope will happen at this point is that the remaining shrimp survive and reproduce and that new borns born in the tank should be more suited to the environment/water etc. There is an element of the acclimating didn't go as well/to plan as it should with my knowledge/experience, but I did the best I could, so that is what it is! Simon
    • Franks
      How is now the condition of pH?
    • sdlTBfanUK
      Summary from the old thread; I managed to destroy my wonderful Taiwan bee tank with a faulty heater that cooked them. I then set up the tank afresh May 2019 using shrimpking substrate, new plants and wood etc. The tank looked very drab from the start and several batches of new taiwan bee were added and died out instantly. Covid came along so I decided I would give up with the taiwan bee shrimp and get some fish instead about a year later (1 kilie and 12 mosquito rasbora). September 2020 I tried another batch of tawian bee but they fared no better and the tank was still very drab looking (and still is to this very day). I very much doubt it is the substrate but won't be using that again but have aquired a large bag of the old type of substrate I used before, but I really don't know what caused the problem, maybe there was some sort of bacterial infection or I accidently poisoned the shrimp, or there was something on the new plants/wood??? The parameters were always perfect and I have to just accept I will never know? At some later date I dumped some wild type red cherry culls into the tank as food for the killie but he didn't seem to eat them (they were clear/brown so maybe he didn't see them) and they seemed to settle into the tank and bred! Fast forward to a month ago and I decided that now the postal service is better than it had been early in the pandemic, I should maybe try some more taiwan bee as the cherry shrimp had been in there for a year or so and doing well, so I assume whatever the problem was had gone, although the tank is still not as healthy looking as the other tanks using the other substrate! I ordered 15 black shrimps 2 weeks ago and put those in the tank and they seemed to be surviving so earlier this week I order 20 red/blue shrimp and put those in the ttank yesterday. This morning I counted 18 shrimps (about half) so it looks as though it maybe going to work now, the tank is so densely planted that I would never expect to see ALL the live shrimp anyway! The killie fish died a few days ago so he isn't a threat anymore and I doubt the rasboras are either. I am now in the process of fishing out the wild type cherry shrimp as/when I see them! Here is the link to the full thread about the above but I decided to start a fresh thread from here on, https://skfaquatics.com/forum/forums/topic/14523-here-we-go-again/ I will keep this thread updated and get some photos at some stage, though the new shrimp are a bit small at the moment.  Simon
    • sdlTBfanUK
      I think I should start a new thread on this now as this is getting a bit long and it seems to be working now, and to keep it tidier and easy to find/follow! I will attach a link below once done! Simon https://skfaquatics.com/forum/forums/topic/15621-here-we-go-again-again/  
    • sdlTBfanUK
      Hopefully it will settle quite quickly now and it was just everything sorting itself out, and at least you caught it before it caused problems with the fish and shrimps. As you also say, it will take a bit of time for the neneficial bacteria to spread in the new sunstrate as well! The  packaging of the substrate should tell you if there is any routine you should carry out when first using it because of mineral build-up or ammonia, so if the packaging didn't say anything I think it is safe to assume it was not the substrate (Fluval stratum is volcanic soil), and other people may have just assumed it was the substrate without considering anything else if they had a similar episode to yours? Simon 
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