Take your time, research, read, think about it, reconsider, research some more, then go to the store.
green terror, oscar, jack dempsey, frontosa, convict, skat, var. puffers, mono, white tip shark, var. pleco, labs, neon tetra, cardinal tetra, discus, betta splendin, serpae tetra, mollies, pictus cat, otocinclus, blood fin tetra, cory cat, and anything else I forgot to mention.
To many to mention, all plant tanks running DIY Co2 systems.
fish don't need toys, get that crap outta the tank!
Maintaining proper calcium levels is an important part of keeping your marine tank healthy.
Why buy Aquarium Supplies online?
An overview of tropical fish tanks, what they are, and the pros/cons of keeping one.