I bought mine after several DIY attempts. Dropping the $189 on it hurt a bit, especially after the money I had already wasted trying the DIY route, but I'm glad I went with it. It's been up and running a couple of months now and I love it. When friends ask if I think it's worth the cash, I always reply with "In my 20+ years of fish/planted tank keeping, it's the best investment I've made." I'll be purchasing a second one sometime in Dec/Jan.