I have a 25 gallon tank with an Aqueon Quietflow 30 filter. My tank is moderately planted (anubias, crypts, dwarf sagittaria, red melon sword, java fern, etc.).
Current fish:
3 guppies
1 platy
7 harlequin rasboras
1 rubbernose pleco
Could I add 6 cardinal tetras or 1 more platy? Should I add...