Oh that's terrible about the downoi, foo. It looked so good. Still, your tank looks great & I'm sure it'll be different again soon. Keep up the good work! You still don't have animals in there do you? Yellow shrimp look cool.
I threw on the 2213 as it was not in use ATM, so I have both the 2217 and the 2213 on this tank in opposite corners, both pointing towards the middle. The plants seem to love it because they have gotten so thick that the CO2 rich water gets better circulated through the tank