Clicky

Jump to content
Damien Dyer

Is zero KH affecting PH

Recommended Posts

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 

Share this post


Link to post
Share on other sites
WhySoCRS

How old is your Fluval Shrimp Stratum? From what I’ve read on here it loses it’s abilities quicker then other substrates, this could be the reason perhaps.


Sent from my iPhone using Shrimp Keepers Forum

Share this post


Link to post
Share on other sites
jayc
10 hours ago, Damien Dyer said:

zero KH

Have you been keeping up regular water changes?

And regular tank cleaning including filter media clean?

What water do you use for water changes?

Share this post


Link to post
Share on other sites
Damien Dyer

The substrate is almost 2 years old, I know it's getting on in age. But I use RO water which comes out around 7ph so it still seems to be lowering my ph and keeping a stable Gh. I guess my main question is, is the zero Kh the cause of the slowly falling ph? Or possibly something else? BTW nitrites, nitrate, and ammonia are not an issue. Cheers 

Share this post


Link to post
Share on other sites
Damien Dyer

I top off with straight RO water every week to maintain tds and do a 15-20% water change once a month with SS GH+ maintaining 140 tds. I'm probably a little slack on cleaning the sponge filters, probably only every 6 months but when I do they are flushed under running rainwater and they're filthy. Would that effect Kh? I've heard of people using ss Gh+kh in small enough doses to maintain a kh of 1-2. Is this recommend by anyone? Is the zero kh the issue with my low ph?

Share this post


Link to post
Share on other sites
WhySoCRS

Just to play it safe you would be better off cleaning those sponges in tank water.

Share this post


Link to post
Share on other sites
jayc
6 hours ago, Damien Dyer said:

Is the zero kh the issue with my low ph?

zero KH is not the cause in itself. Because you have no buffer (0 KH), anything can cause the pH to drop.

A mature filter and the process of beneficial bacteria breaking down nitrates will cause a reduction in pH naturally.

 

 

6 hours ago, Damien Dyer said:

I've heard of people using ss Gh+kh in small enough doses to maintain a kh of 1-2.

No need to buy SS GH/KH +, since you already have GH+.

You can add a pinch of bicarb soda into your water changes to get the same effect.

Edited by jayc
  • Like 1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • 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
      Hi All,
      In addition to the RO unit FSA generously donated to SKF for the Christmas comp, they are willing to offer a 5% discount on purchases for SKF members. You just need to place the order by phone and mention the discount. For online orders use the following code: SKF5.
      Any issues let me know.
      FSA are also very keen to get feedback on their products. I encourage any FSA product owners to write up a review here: 
      http://skfaquatics.com/forum/articles/product-reviews/

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

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


  • Must Read SKF Articles

  • Register today, ask questions and share your shrimp and fish tank experiences with us!

    Join Our Community!

  • Posts

    • jayc
      Thanks. It would help determine if there are any signs of disease on them.   In all the time I have kept shrimp, and researching shrimp diseases, I have not actually seen shrimp loosing legs in a shrimp only tank. However, it can be a possibility. If they have a particularly difficult time at moulting, and can rip off their legs during the moulting process. The good news is that shrimp can regrow legs, after moulting a couple of times. The hard part is keeping them healthy long enough till their next moult. What concerns me is that it is happening to more than one. Let's go back to water parameters. Can you list all the parameters you can? Water hardness, and calcium is of particular concern to me. Are you adding any form of calcium to the tank?
    • jswljones
      No fish, just one snail and hard to do macro shots on my old phone. Plus i have no breeder box.. I'll try to see what I can do and get better ones in the morning.
    • jayc
      Do you have fish? We need a Macro shot of the shrimp please. Can't see anything with a zoomed in, with the shrimps on a black background. Put them in a breeder box to photograph them easier.  
    • jswljones
      As my title states, The last few days my cherries have lost some of their legs and one died this morning. Not sure whats going on and my google-fu hasn't turned up anything. Hope you guys can point me in the right direction. I upgraded to a 10 gal from a 2 gal about 3 weeks ago with no problems. I cycled the tank for about 2 weeks before and all are in line. Here are some pictures:  
    • sky99
      Hello, Indeed, there shall be a pH variation depending on the plants that use/release CO2. However, 0.2 is comparable to the measurement error of a pH pen (i bought 2 and average the measures, and generally repeat the measuring 2-3 times if i need something more accurate). Concerning the akadama, the one i bough is Akadama Ibaki, and i think that it is the brand of it, the model is "double hard line". All technical soils will be "used up" at some point, and have to be replaced to get the buffering effect. However, the largest the effect on the water, the faster it will use the chemicals... For the same soil, if you're starting from 8.5 pH water to go to 6, it will probably use faster. In my case, my tap water is pH 7, KH 0 and GH 0, and i get to 6.5 pH, so i expect it to last a long time. If you want to do smaller doses of technical soil to lower "just a little" , i wonder if akadama will be strong enough for that? Or maybe it would simply take a long time to buffer the water to the final value... Anyway, in my case, the main goal is to keep shrimps. Some tanks are scaped, but if the soil "runs out", i'll probably either keep the scape with a population that likes the default water parameters, or redo the tank. But i have 11 tanks so i can move populations around i guess; if you only have this tank i don't know how to proceed... One thing i have noted though : Seyru stone increases the PH to aproximately 8 (again from near RO water parameters : GH/KH at 0, pH 7, TDS at 40), and the effect lasts extremely long (i have tanks with seyru stone that are years old, still the same parameters), so perhaps if we could find a rock that produces acidic water, it would create a long lasting buffer... With the large rock it takes more time than with technical soil to reach the final value, but basically lasts forever...
×