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Crabby & Frosty’s Mischling Tank


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Crabby

Hey folks!

This thread is intended as a documentation (and space to ask questions of course) of @Frosty and my venture into caridina shrimp. 
We’re starting off this weekend with 15-20 mischling shrimp (tibee x CBS), and maybe in a couple months if everything is going well we can add some TTS or KK or pandas or something. 

The tank is a 4ft, with inert gravel and rocks, lots of moss, Java fern (crested and regular) and assorted crypts, and a couple big pieces of driftwood. 

Current parameters are the following (please advise us if you think we should fix anything):

22°, 6.8 pH (we might try ageing our water change water with peat moss, so with a couple water changes we’ll bring this down to 6.4-6.6), 3GH, 2KH, and 0 nitrates, nitrites and ammonia. 

We’re thinking maybe to make it more interesting to the average onlooker, we might add a small school of chilli rasboras, but that’s hopefully going to be it for fish. 
The tank is in direct sunlight, so there’s a possibility we’ll need ottos at some stage.


I’ll update later with photos and our plans. Please let me know if you’ve got any advice!

Cheers!
 

Edited by Crabby
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sdlTBfanUK

It sounds like you are on top of it. The PH could be lower, as could the KH which is a bit more concerning, but I assume you are using tapwater and hopefully it will work but don't get too many shrimp until you are sure the shrimp will do ok in the water, esecially as they  won't be cheap shrimp? You may be wiser to buy whichever you want, that are the cheapest for the initial try/tester this weekend?

I have the chilli rasbora in my  old taiwan bee tank, now with wild red cherry shrimp, and a killie. As these shrimp are almost invisible most of the time, it is good to have something to see in the tank, and it adds another dimension.The water parameters are totally off for the neocaridina yet they survive - they were dumped in the tankwhen smallera food for the killie..............

I'm sure you are already aware though that even these small fish will eat new born shrimp so it will need to be quite densly planted, and you just have to accept this will happen, and that you will get less of the shrimp offspring survive?

You may also needsometype of water cooler if it is in sunlght in Australia?

Look forward to seeing photos and hearing how it goes!

Simon

Edited by sdlTBfanUK
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Crabby
On 5/21/2021 at 5:49 PM, sdlTBfanUK said:

The PH could be lower, as could the KH which is a bit more concerning


Yeah, we’re trying to sort out the pH and KH with this ‘ageing water w/ peat moss’ idea, so hopefully that’ll work. 
I also got a TDS pen this weekend, and I haven’t had time to measure that tank yet (just their QT tank, which is perfect for every parameter!), but I’ve been playing around with it and I was surprised to find that I only have 26ppm of total dissolved solids coming out of the tap! So when doing water changes, my tap water serves almost as RO water! I think this may be why my previous attempts with shrimp have not gone very well. I was doing 20% water changes with tap water, which must have been really messing with the tds. I think with this new tank, we’ll be doing very slight water changes and trying to match parameters as best we can. And with my shrimp tanks at home, I’ll be going back to taking water from my main tank for water changes (and again doing very slight WCs). 
To be honest, that could explain why the times that I had no losses were when I had long periods where I wouldn’t touch the tank. 
 

On 5/21/2021 at 5:49 PM, sdlTBfanUK said:

You may also need some type of water cooler if it is in sunlght in Australia?

We should be fine, it’s not constant, just little rays of direct sunlight that slip through the trees every once in a while. But it looks fabulous when that comes through.

On 5/21/2021 at 5:49 PM, sdlTBfanUK said:

I'm sure you are already aware though that even these small fish will eat new born shrimp so it will need to be quite densly planted, and you just have to accept this will happen, and that you will get less of the shrimp offspring survive?

Yeah well if we do decide to add them, it would be in a while once the colony has stabilised and started growing. And once the plants have grown in.


In terms of the shrimp, the guy failed to respond when I asked for his address multiple times (gumtree seller), so I guess we’ll see if we end up actually getting those mischlings. I’m hoping it was an accident, and I can pick them up next weekend.

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jayc
48 minutes ago, Crabby said:

I also got a TDS pen this weekend

I am surprised you did not have a TDS pen until now.

Looks like you will need to start looking into remineralising soon too. 

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Crabby
Posted (edited)
6 hours ago, jayc said:

I am surprised you did not have a TDS pen until now.

I know, I’ve been meaning to get one for over a year. Glad I finally did. Unfortunately, I tested the tank today and it came out with a TDS of 40… which is great fun, because it means either the test kit is measuring GH and KH wrong, or the TDS pen I just bought doesn’t work (as 1 degree hardness is equivalent to 17.9ppm, and TDS should include measures of hardness like GH and KH). Yay. 

Edited by Crabby
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jayc

Has @Frosty got a TDS pen you can use as a comparison?

I would lean towards the GH/KH test kit being inaccurate.

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Crabby

No, we don’t have any access to other TDS pens, but we have multiple test kits so we can try that. 
I’m currently thinking it’s the TDS pen, just because it’s got a temperature feature that’s a tad broken. But I’m not sure, cuz everything other tank seems right for tds. 
 

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sdlTBfanUK

Where did you get the TDS pen from,I'm sure there are many fakes on places like ebay etc?  Also check the 2 prongs are straight and parallel as if not that will give a different result.

Simon

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Crabby

It’s from Amazon, but I’m pretty sure it should be fine. I’ll check the prongs. Cheers.

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sdlTBfanUK

I have just looked at my tds pen, there should also be a small hole on the back if it is a real one, I believe the fakes don't have the hole?

Simon

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