So I've been stalking this site for like a year and finally made an account! I have a 55 gal aquarium that's been up since June and had several black mollies, neons, and a 13in pleco in it. I say had because my mom did something to the filter and every fish died over the weekend, that was about September. I put some feeder fish in it to re-cycle it after cleaning out all the dead and removing one filter. It now has an Emporer 280 Bio-wheel and 14 neon tetras. I use Prime water treatment. I added the neons one week ago and they seem to be doing great, but they don't school much and every once in a while it looks like they are almost fighting?
There is a ton of plants(well.... 10? Two are pretty big as I've had them 3yrs+), not sure what they are all called but I know I have
Java Moss x)
Sorry about the lack of plant info.
The plants all appear healthy as far as I can tell, aside from a few brown slimy leaves on some, they are dead. But some leaves die off naturally, right? I just pull them off when they do that..
My substrate is the standard gravel at pet stores/walmart. Is that ok? About 3 inches deep in some spots, I want to add more because I think some of my plants need more coverage.
Water is 77F
and according to my "quick dip test kit" (a stick thing) the parameters are...
7.1 pH
120ppm alkanity
100ppm hardness
no nitrite/amonia
20-30ppm on nitrate (due for a water change).
I do partial water changes about every two weeks with a gravel vac, but I don't get too close to the plants because of their roots. I just try and get the biggest stuff/ dirtiest spots.
I've heard the water tests are more accurate? Like with drops and stuff.. but my petstore can do this when I go in if I bring a sample. Would it be worth buying some or is this test sufficient?
SO... my big question is what kind of a community tank would be good? For the longest time I was having issues with mollies, the black ones did great but all other strains died off slowly :/
I really like all the livebearers, dwarf gouramis, and betta fish. I was thinking about having a betta and some guppies but if he was aggressive to the guppies I wouldn't want that, and it does happen in several cases. I want more plants, and some
Water Sprite, but is my gravel ok for them?
I'm not sure what will work well

Again, I have 14 or so neons already. Is the filtration good?
Thanks!! ANY criticism is loved, I won't be offended. I'll try and get pics.