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    • Damien Dyer
      By Damien Dyer
      Hi I signed up awhile back but this is my first post so I hope I'm in the right section. I've been keeping crs/cbs for a couple of years now, starting with a dozen and now have approx 200. I have a large 200lt tank and use fluval stratum. My parameters have always been pretty steady, tds 130-150,  ph 6.7-6.8, GH 3-4 and KH 1-2 and have had great sucess but over the last few months my KH is reading zero and the PH has gone from 6.8 to 5.9!! All shrimp are still doing well and no noticeable deaths but the ph drop is concerning. Is this directly related to zero KH? (No buffering) Any advice on the cause and any action that I should take would be very much appreciated. Thank you 
    • macjeff
      By macjeff
      I have had a 20 gallon RCS tank for 3 years now.  I have moss balls and some JAVA moss, drift wood, and mineral rocks.
      Only RCS in the tank and some soft shell snails I have in there I breed for my fresh water puffer fish in another tank,.
      My issue is that the shrimp live 1-2 years and they breed just fine but I never see babies.  I see plenty of eggs but never babies.  (Well 1 or 2 a month maybe but they disappear)
      The adults keep going just fine until they die off of old age or something else.
      I keep about 100 shrimp in the tank and have to replenish 50 every 6 months about.
      Water Temp I keep about neutral. 
      PH- 7- 7.2
      I use distilled water or sometimes Reverse Osmosis water because our tap water goes through a water softener which puts a LOT of salt in it which makes TDS very high so I try not to use tap water at all.   
      I feed every 2 days with Azoo or other good food and not much.  Its all gone by the time I feed again.
      I do add some powder food for the babies and a shrimp bacteria powder (just started that about 6 months ago but has not helped or hurt)
      Someone told me due to the distilled water my issue is LOW TDS.  So I bought TWO different meters.  I tested the distilled water and its about zero which is correct.  I then tested my water and its about 700.   I do top offs and just did a 20% water change last weekend with distilled water.
      So is that the issue?  Should I pull out the mineral rocks?
      I am thinking tonight to take about 8 gallons of water and drain the tank down about 40% and then fill with the distilled water.   I can repeat the process in a week and once I get the TDS under 150 I can add a little shrimp mineral to get it to the 200 range.   The reason I am saying that is the TDS could be bad TDS and not the minerals they needs.  I ordered some Salty Shrimp Mineral which I heard was good.
      Should I just give up?
       
      Jeff
    • NoGi
      By NoGi
      One of our sponsors, @Filter Systems Australia are seeking an expression of interest regarding a range of filter media they are considering carrying. If interested post here. Current prices are as follows:
      Mafian Stone: $15/Kg Tourmaline: $25/Kg Neg ion: $30/Kg FAR : $25/Kg But this will change (go lower) subject to demand and our SKF discount.

    • NoGi
      By NoGi
      Source: http://www.fsahome.org/uploads/4/8/5/9/4859831/gt1-70_di_brochure.pdf
    • NoGi
      By NoGi
      Source: http://www.fsahome.org/uploads/4/8/5/9/4859831/gt1-70_di_brochure.pdf

      View full article
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    • Goco
      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.
    • sdlTBfanUK
      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  
    • Goco
      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 😃
    • sdlTBfanUK
      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
    • Goco
      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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