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Tetra external filter

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Lynnn

New Member
Joined
2 Apr 2025
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London
Hello I am new here, can anyone help me identify the serie number of my Tetra Filter? Has no tags anywhere, so not sure if is a 600,700, 800 or 1200, I need to change the canister ring and not sure which one should I order, I bought this filter few year ago then I had a break on my hobby, but now I am back to the active again
Thanks if someone could help
 

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I did search for dimensions, but cant find anything, already sent an email to Tetra, but still waiting , my Filter is dripping so really need to order a new O ring, or buy a new filter… which wouldn't be a great time atm The bottom part is around 21cm maybe someone around here have one i can compered ( hopefully)
 
O rings are available in a very wide range of sizes and lots of them serve multiple devices. It’s at least possible you might find one that’s the right size - just measure the one you have very accurately to determine its inner & outer diameter and have a look online.
 
Lynnn said:
I did search for dimensions, but cant find anything, already sent an email to Tetra, but still waiting , my Filter is dripping so really need to order a new O ring, or buy a new filter… which wouldn't be a great time atm The bottom part is around 21cm maybe someone around here have one i can compered ( hopefully)
Click to expand...
Measure the height of the filter.
EX1500 = 55cm
EX1200 = 50cm
EX100 = 45cm
EX700 = 40cm
EX500 = 35cm

According to Tetra External Filter | Tetra Filter
 
There is an EX400 also!
Aqua sobriquet

Product Review Thread 'Tetra EX400 Mini Review.'

As some of you know, I ordered a Tetra EX400 for my newly setup Nano.
Someone asked for a review when I got it so here it is!

So why did I choose the Tetra EX400? Size and output were the two main reasons. I'm not that hard up for space but it seemed silly to have a large external hooked up to a 35L Nano. At 400 LPH output seemed about right and could be throttled back a bit if needed. Other options would have been an Eheim Classic but I liked the built in quick release hose coupling unit on the more modern designs like the Tetra.

I ordered the unit from Zooplus UK at a cost of £49.99...
 
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