Jump to content
Mapsyd

Hello and newbie shrimp keeper

Recommended Posts

Mapsyd

Thanks Jayc. Question for you. Salty shrimp arrived today... When I make up water to say TDS of 200 in aquarium will not making the water change water to same level just double tank TDS? Sorry stupid question... 

Share this post


Link to post
Share on other sites
Zoidburg

If your tank is 46 litres, and the water in the tank is 200 TDS, if you remove 6 litres of water that's 200 TDS, and you add back in water that is 200 TDS, then the tank will remain stable at 200 TDS.

 

However, if the TDS rises to, say, 225 TDS, due to evaporation, food, waste and decomposing organics, if you remove 6 litres of 225 TDS water and add back in water that's 200 TDS,  it's going to be less than 225 TDS but higher than 200 TDS.

 

Once you get the hang of doing water changes, you could add in water of lower TDS to target a 200 TDS count. Say, the TDS rises to 225, you remove enough water, and what you add back in is 180 TDS. Once the tank has had time to settle (you may not get accurate TDS readings once you add the water back in - it can take a bit of time to mix), the TDS will be around 200.

  • Thanks 1

Share this post


Link to post
Share on other sites
jayc

What Zoidburg said.

Your tank TDS and your water change TDS will mix and average out.

So if your tank TDS is higher than your target, mix a lower TDS with your change water. Vice Versa.

It's not difficult. You'll get it.

  • Thanks 1

Share this post


Link to post
Share on other sites
Mapsyd

Thanks guys... Was just getting a tad confused... Think I will do this this weekend... May aswell learn before shrimp arrive... Lol 

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



  • Must Read SKF Articles

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

    Join Our Community!

  • Posts

    • supermansteve32
      Okay so I haven't done a water change in weeks because I thought the TDS needed to get closer to 150 before changing and my TDS meter continually kept reading 108 to 114. Sho I went and bought a new TDS meter and it's different from my old one.  The new one vs my old one: my water in tank 147 vs 103, water using the correct salty shrimp mix to RO water 88 vs 66. So I'm going with the reading on my new TDS meter.  So it's time for a water change.  Should I replace the water with the 88 TDS or put some more mix in until it's above 100 (since CRS parameters should be 100-200)? Thanks again everyone
    • CurleyJones321
      i had a significant drop in PH as well, so i think thats accurate. I havent however checked my readings yet and will do that later today but i have NEVER had Amonia (NH4) readings in either of my tanks. my Prawn is also growing fur and my tank is growing a healthy layer of biofilm that i want to clean off but think is a bad idea? I think adding the items from the other tank have helped things along with regards to the Biofilm. I've just done my normal maintenance except on the large tank as the TDS kept creeping up to 265 so i did several extra water changes at 0TDS to get the tank down down to 230 and added BB.
    • Felenah
      Thank you both so much!  I have struggled.  I will change out the substrate.  Thank you again!
    • sdlTBfanUK
      I tested the tank yesterday and TDS 178, GH7, KH1, no ammonia or nitrite and nitrate 25 still (daily). I will keep doing the ammonia/nitrite/nitrate daily for now and I have got 8L (one third tank) of new water to replace on thursday, this in theory will get the TDS to about 125, GH about 5 so those should be about perfect for a start! The Ph was 5 and this makes me a bit sceptical it was the 6 I got last week!  I haven't had this nitrates problem (reading) before but I am hoping that may correct itself when the plants are a bit more settled. There also hasn't been any ammonia readings yet and I think I will just remove the cooked shrimps (it's growing fur) if there isn't any reading by tuesday??? Simon
    • sdlTBfanUK
      Good to hear you have got this sorted out! They are cheap to buy and I have one that does temperature as well, like you. Usually 'I believe' if they are inaccurate it may be that one of the prongs may be bent and so you may be able to bend the one which isn't straight to be straight but as you have a few I would just discard the one that is wrong! Simon
×