I think the cost will be the same or maybe more if you build one. Of course you gota count the fun involved. I would build one just to see if I could. Also sort of plan a larger one while your building the 180. If the 180 works out you have a great starting point for something bigger!
I believe the cost per gallon starts to go down on a DIY build at about the 500 gallon price. Cost per gallon seems to be about the same (DIY vs. store bought) for tanks smaller than 500 gallons. IMO
I believe the cost per gallon starts to go down on a DIY build at about the 500 gallon price. Cost per gallon seems to be about the same (DIY vs. store bought) for tanks smaller than 500 gallons. IMO