Hi, in my 12 gallon tank i have: 2 platies, 2 gold barbs, 2 harlequin rasboras, 6 neon tetras and NO real plants i feed them 1 a day normally flakes but sometimes insects. My filter is called " niagara 300 POWER FILTER 230V-50hz. 4W. IPX4" is it a good filter? I have no idea if ive even put the right information it does 300 liters an hour