Originally Posted by SomeDudeAtHome
I agree with everything that has been said about bettas. I wasn't to into them either until I got one and now I want more haha. They are pretty active fish and have great personalities when kept in a big enough tank. If you check out this link of my betta you'll see what I mean kind of. http://www.tropicalfishkeeping.com/b...-school-65629/
About plants I'd say just buy a couple that are relatively low maintenance and see how they do. If you buy some Seachems Comprehensive plant supplement and have good lighting chances are they will do pretty well.
Also using water from your turtle tank to help cycle won't really do much. The good bacteria lives on surfaces of the rocks, glass, filter etc. There's not anything beneficial in the water of an established aquarium.
Agree with everything mentioned. If you wanted, you could take some gravel or filter media from your turtle tank, and that would help... Or set up the tank, run it, and rinse off the turtle's filter media in the tank right before you add something small... Adding a teaspoon of sugar when you add the 'junk' from the filter will help kick-start it as well.
Do you know the Ph of your water? I would base the decision around that.
There are a LOT of fish that will fit, but many will have to be specially ordered. (petco or pet supplies plus can order them, but they're fairly tiny...)
You could even have a nice little teeny community tank-
6-8 of one of these:
Bororas merah( Dwarf Clown Rasbora, Phoenix Rasbora)
Bororas urophthalmoides( Exclamation Point Rasbora, Sparrow Rasbora)
Bororas brigitte(Dwarf Redfin Rasbora, Chili Rasbora)
Celestichthys margaritatus (celestial pearl danio)
ember tetra (Hyphessobrycon amandae)
Pristella tetra (Pristella maxillaris)
and 3-5 of one of these:
Dwarf Chain Loach (Yasuhikotakia sidthimunki)
Pygmy Cory (Corydoras pygmaeus)
and probably some shrimp, too... Perhaps about 5-6 cherries... If you like centerpiece fish, you could even do the minimums and add a dwarf coral platy as your centerpiece fish... It'd be the largest one, at a whopping size of 1.5 inches.
The flourescent light would do well with live plants, which would also help reduce the need for a 'cycle', since they use ammonia as one of their nutrients.