I have a Super Highback Gold Aro 7" brought home 7 days ago. 4ft tank with a Sobo FK- 1504 sponge power filter with bio balls. Is it enough for my aro tank filtration? He started eating chicken heart pieces of 0.5inch. Once I'll feed chicken heart and once Hikari Food Sticks. But I'm really concerned about the filtration. My tank is at a height of 10cm platform and my top is covered with wooden cover where I can't place a top filter.