I have had saltwater fish for almost a year now and think have figured out most of the mistakes I made....so time to go from 55 gallons to something larger. What is the cost of an aquarium that fits into a 48 by 42 space (width deoesn't matter)? I removed a section of wall after Sandy and want to fit a tank there. All equipment would go underneath and the tank would have the holes drilled on the bottom. Is about a $1K the right amount to spend or do I need more?