In the not-too-distant future, I'd love to add some tankmates to join a Betta and an Apple Snail currently housed in a 15gal tank (planted, heated, filtered, slightly basic and a little hard).
My wife likes Neon Tetras, so it'd probably be wise to appease her even though I'd personally opt for Rummy Nose. I've also read the consensus opinion on the compatibility of Bettas and Corys, so I'd considered adding them as well.
My original thought was to add a small school of Tetras (5 or so) followed a few months later by a small group of Corys (maybe 3). Theoretically, I'd have just enough of each fish, the Corys would take care of business on the bottom, the Tetras would hang near the middle, and the Betta would rule the roost up top.
Well it turns out AqAdvisor strongly disagrees with my initial offering and feels that I would need a significantly larger filter than the Tetra Whisper PF10 I have. A few specific questions I'd like to pose:
1) How accurate is AqAdvisor?
2) Of particular interest is the lack of consideration given to plants by AqAdvisor. Won't the plants help pick up some of the slack from the undersized filter?
3) Assuming I don't upgrade the filter, what would your stocking advice be? Do I max out the school of Neons, make my wife happy, and leave the Corys for a future tank? Try to get by with the minimal recommended number of both and see how it goes? Or are there suggestions I haven't thought of?