i have a pair of mated macs in a 20g at the moment.i am planning on getting a 84g custom tank 5'x18"x18".i am going heavly planted some wood lots of caves, leaf litter(if its not too messy)etc.how much floor space is sufficient for a pair of apitsos?i would like at least them and another pair,maybe panduro.thinking about bosemoni for the upper or rummy nose tetras.does any one a tank close to this size?what do you keep?will a flying fox reac havoc on my eggs?