I just bought a new 75 gallon tank and stand but haven't bought any hardware yet. The tank is 48" long and from what I have read, it sounds like I will be best served to have two filters and heaters, one of each on each end. I think i also read that each filter should process half the water five times per hour. I assume that means they each need to process a lillte less than 200 gallon per hour each. If that is the case, please suggest good filters (I prefer HOB filters). Also, need suggestions for good heaters. The only low price fish stores near me are PetSmart and WalMart and I cringe to call WalMart a "live fish" store since they generally have more dead fish than live ones in their tanks but they do have filters, heaters, etc.