Only Filter I'll Buy
I have one 40i and another (green one) that's similar but not as good. When the green one died, I made the mistake of buying a Cascade. Never again will I buy anything but a 40i. I had no idea how great this filter was until I tried something else. I spent more money on a filter that I do not like. Lesson learned. Only Tetra 40i's from now on!
Laura from Bloomington, IL