I reply to a comment / question, who wants to can join in the discussion with a comment.

"Good evening guys. On the web know me as Naib and I introduce myself to you with the same nick.
I would have to ask yourself some questions:
It 'a bit of time that the idea of having a new aquarium in the house, bigger than the previous one, makes me all the information you find on the web possibili.Sono managed to find an aquarium that does not seem too bad 120litri hear comments on various forum.Ho compiled a short list of breeds of fish that I intend to inserire.Poche but I personally do not like much:
1 Betta splendens,
1 Ancistrus,
Neon 7,
3 Barbus Partipentazona,
2 Scalar Pterophyllum.
The first question concerns the races scelte.So that bettas can be very aggressive with different kinds of fish but I would like to know if in particular, may be included with those from me.
I had assumed an average water temperature of 24 ° c, but I knew too little about the relationship that should exist sull'alcalinità water, its "weight" et simili.Potrete explaining enlighten even if the races on the list, can not live in a single tank?
Last cosa.Una question about the plants in the aquarium: There are plants that are appropriate in helping maintain certain values ​​of the water and others less? I would not put plants at random just for their appearance ... "

"Races" of fish is not correct ... SPECIES of fish. :-)
After that ... we talk about this choice:

  • 1 Betta splendens, not to put only one, at least a couple ... because you want to live without a male "entertainment"? :-)
  • 1 Ancistrus: here too ... it put the gallons are quite a few ... maybe a couple as you can recognize the sexes
  • Neon 7: l for, you could also put like 15-20 but if I read you also keep the angelfish, then better 7-10.
  • 3 Partipentazona Barbus: Barbus with no other finfish long ... he likes smangiucchiarle and often leading to death of the poor "super-pinnuti". So either delete your betta and angelfish ... but I purge the barbs ...
  • 2 Pterophyllum Scale: well if you take a couple bad if you catch them young, because the chances that you find risca own a pair, ie 2 fish of different sexes who like them too, is quite low. Alternatively, take 4-5 small and then after 6-10 months bring back to the store someone will be formed when a pair or otherwise of "sympathy".

The temperature is fine, stay between 24 and 26 degrees and you're done.
To enter the plants ... quite a lot '"fast growing", ie plants with CO2 (even co2 do-it-yourself ) and the fertilizer to grow well, fast enough to be pruned frequently and then allow you would remove nitrates from water. It 's a way to decrease the frequency of water changes and maintain an environment in balance. These should be at least 1/3 of the total, better than 1/2 in my opinion. And do not fret the small floating plants, which help a lot to lower the "nutrients" in the water. Then I add some slower growing and you're done.
They are also lower than the previous, and pick the ones that you piaccino but also that you can "afford" in relation to the amount of light you would have in this new tank.

Good progress ! :-)