I am sure there are people out there like me who save ever dollar possible. Cleaning 10 year old gravel that is like mud is a hassle and quite frankly, I do not know if I would do it again. It was about 150 pounds of it so I wanted to save $80. That's 2 weeks of gas money. My fingers hurt but the gravel is finally done...flourite should be here tomorrow. Sigh, more gravel...thankfully I am only adding 1 bag of it. Just going to mix it in with regular gravel.