our home is a 4 bedroom home and there is a 1,000 gallon tank. considering that most 4 bedroom homes have 2-3 children, this home is certainly capable of supporting 5 ppl. if it werent, they wouldnt have been able to sell it to us. the only difference between when i bought the house and now is the baby (even though dh and i werent married or living together at the time, they would have had to calc