i recently changed from a 50 gal to a 75 gallon tank.i have 3 clown loaches 1 barb 1 kissing fish 2 guppies 1 platy 2 african chiclids 1 pleco 1 siamese alge eater and a small frog in the 75.i used the water from the 50 plus added 25 gals of new water,same filter(170 biowheel)and its filter stuff gravel and ornaments and also using a 40 gallon filter fluval filter.is this enough filteration or should i buy a filter for a 75 gal or bigger.my water looks cloudy from outside but when i look inside tank it looks clear. shogirl