michaelkingdom

I am new to pools so bear with me. I have a fresh water pool that I treat with chlorine. My local pool supply recommends this algecide that is $20 per 16oz bottle. I have seen other algaecides that go for $8 per gallon. Is my pool supply ripping me off? Well, I know the answer to that already. They are ripping me off. My real question is, can I use any algaecide out there? Michaelkingdom