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I wondered if anyone could give us suggestions on stocking our 125l tank.

We definitely want neon and cardinal tetras in our stock, but does anyone have any other suggestions?

The tank will have a gravel substrate and will be planted.
 
I wondered if anyone could give us suggestions on stocking our 125l tank.

We definitely want neon and cardinal tetras in our stock, but does anyone have any other suggestions?

The tank will have a gravel substrate and will be planted.

Rosy tetras are nice got half a dozen in my 120l peaceful schooling community fish they have like pointy black / white dorsal fin quite comical to watch when they are strutting there stuff trying to out do one another :p there in with some glowlight tetras similar to neons.
 
I don't think we want 'just' tetras necessarily, what about corydoras? Will they coexist with tetras ok?
 
think you need sand or something very fine for corys as they root about in the substrate standard gravel can damage there barbels.
 
We didn't want sand as it won't hold any nutrients for the plants, would superfine gravel be ok?
 
They can co-exist just fine but ideally you need a sand or very fine (2-4mm) gravel base with no sharp edges otherwise you may have issues with them wearing down their barbels as they sift through it all. Some people get away with gravel, your results may vary.

I wouldn’t do neons and cardinals personally as they are very similar. One or the other is fine, neons tend to be a bit more robust out of the two but I prefer the look of cardinals. What about a centre piece fish like a pearl gourami or two?

I would do 2 species of mid/top water fish max and something for the bottom.
15 Neons or cardinals
2 peal gourami
6-8 of the smaller Cory species like Pandas

You could add some shrimp and a few nerite snails to finish things off. Nerite snails won’t breed but may lay eggs which are white dots.

I would avoid Brisslenose Pleco’s - overrated, nocturnal so hide all day, they need a special diet and will eat your pants. I would actually avoid all Pleco species.
 
We didn't want sand as it won't hold any nutrients for the plants, would superfine gravel be ok?
Gravel doesn’t hold any nutrients either, if you are going planted I would recommend root tabs and liquid fertilisers. You may be able to get away with just the liquid so start there first.

Fine gravel should be fine as long as it’s rounded and not sharp. Fine gravel and course sand are pretty close.

I would suggest a comprehensive all in one fertiliser, the evolution aqua one is decent and reasonably priced.
 
Would a Betta be a option for a center piece? The females seem to be compatible with tetras and Cory's from what I've read.
 
Why a female and not a male?

Beta would be fine either male or female but they are quite small. Most stores don’t carry female betas so they are pretty hard to come by and can be a bit drab compared to males. The jewel tank should be fine in terms of flow for a male.

Male betas only normally take issue with fish with long flowing fins (like facy guppies etc) and other betas. Often it’s the other way round with nippy fish picking on the long fins of the beta.

I would go for a male If pared with neons/cardinals and corys.
 
Those comparability charts are really only a general guide, the terra family is so large you really need to look species by species to make a proper decision.

Some tetras can be nippy little buggers and may not be the best fit with a beta, others will just outcompete them for food.
 
With regards to tetra. Get a peaceful kind the aggressive ones really can be annoying at times. Iv a group of 12 columbians and they're very dominant of the middle to top section of the tank the only other tetras allowed in are xrays and black and white skirts. Glow lights get nipped and chased as do neons and cardinals

Also Cory's will do fine on softer substrate I use jbl manado which is compacted clay balls 2mm or so
 
I too have had columbians, I didn’t have any nipping issues but they were very aggressive when it came to food and very much out competed the slower fish. Sinking pellets never hit the bottom. Only way to feed the tank properly was to feed a fine food that they couldn’t just hoover up in one second (fine flake, freeze dried brine shrimp).
 
Any trick to cutting the background to size? I don't want to cut it with a blade whilst on the tank because I don't want to scratch the glass.
 
Any trick to cutting the background to size? I don't want to cut it with a blade whilst on the tank because I don't want to scratch the glass.
Yes, Easiest way is either put it against the back and fold it round edges and make sharp creases in it. Or a knife down edge why its on tank but don't do it against glass, Use the glass as an edge guide for the side of the knife to run down
 
Any trick to cutting the background to size? I don't want to cut it with a blade whilst on the tank because I don't want to scratch the glass.

What sort of background have you got, I find using just a black background gives more depth and contrast to the tank I just used spray on rubber paint and it easily comes off if you want to change it.
 
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