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Welcome to the forum

If this is for your 48 liter tank, I would not add anything to it as the tank is really not big enough for the tiger barbs as it is.
 

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Discussion Starter · #3 ·
Okay thanks, just thought I'd try get one more in. The fish I have are happy and content which actually surprised me after everything I read once I got more into keeping fish. I am looking to get a bigger tank as there's all sorts I want!!
 

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We all have to decide for ourselves how much room we want our fish to have to swim. In my experience with tiger barbs, they did best in a 55 gallon (largest of the tanks I had kept them in) and they did best with tank mates in that size tank as well. So naturally, that would be my suggestion for you.
 

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We should clarify the tank size...you wrote 48L as the title in the log, which I think was previously taken to mean 48 litres, but in your log it says 48 gallons. So I am assuming you have a 48 gallon tank, correct? What is the length? And how many Tiger Barb do you have, still the five? And 3 Serpae Tetra? And no other fish?

Byron.
 

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It's 48 litres, don't know why it said gallons in my log. Yes still have 5 barbs and 3 tetras
That is roughly 12 gallons. I suggest a larger tank for the fish you have. Yes, you may think they are fine now, but they are not really. Fish grow, and they grow continually. The tank size impacts their growth in two ways, physical space and water quality.

The physical space limits the fish's activity be it swimming or interaction, and shoaling fish like all barbs and tetras need groups of their own species because of their inherent interactions. The small tank means the water quality deteriorates much faster, and this is impacted even more by the physical issue. The fish release waste and the smaller the water volume the greater impact this has; but fish also release pheromones and allomones, and the smaller the space the more stress which means the more pheromones/allomones so these build up even faster, causing more stress...and so on.

If you are interested in finding out more about this, read this article:
http://www.tropicalfishkeeping.com/freshwater-articles/stress-freshwater-aquarium-fish-98852/

In the profile of the Tiger Barb and the Serpae Tetra, it mentions the minimum number in the group, and the minimum tank size. These numbers were not dreamed up by someone, they have scientific basis.

Hope this helps the understanding.

Byron.
 
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Discussion Starter · #9 ·
I've read everything against the fish I have in my tank. I've had them over a year now, no issue with water quality (do regular checks) plus they swim around fine, chasing each other in the way tiger barbs do. The Serpae tetras shoal with the barbs happily, not sure if that's normal. I'm going to get a bigger tank withing the next few months anyway to get more fish
 

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tons of rumoprs cicrulating around on here and other forums that petco is or is about to have the 1$ gallon sale up to 55 gallon size tanks, might be worth taking a look into since your in the market ^^ i know my local petco is doing it right now.
Since the OP quantifies their tank in liters, they likely don't live here in the states. Not sure if petcos overseas have the same sale...
 
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