I was browsing at my local Tractor Supply and I came across a UV sterilizer for ponds. It was pretty cheap price and it was rated for 1200 gallon pond and it was like 13 watts or something. Are they essentially the same thing as the high priced ones at the LFS? They looked the same as the ones there just $100 cheaper. Would it work on my tank(s)?? Would I have to buy a pump for it or can I put it on my intake/outake of any of my canister filters. I have an Eheim 2215 and an Eheim 2028 Pro 2. Thanks.