Chris127 - Alright that's great to know. I always thought an amano would be kinda big for this tank and that he might not be happy with my cherries in there. I'll give it a try though!
merk1_99 - The diffuser I have is from Green Leaf Aquatics. It's the spiro one that acts as a bubble counter. I love watching the bubbles spiral through the glass. I started out with pressurized on my 30 gallon tank and I don't ever want to go back. It's too much fun and the benefits are worth the extra $ up front.