Thanks! It looks about the same as green Cabomba ..as we should probably expect. Too bad "they" don't make a red (truly red) Ambulia.
I've made the CO2 blunder many a time, but not because of the filter. It's the running-out issue and not catching it until the symptoms appear. Since I run it 24/7, if anyone can think of an alarm system that might be used (maybe from a pressure drop), I'd be very interested.
On the AR Mini, how tall does yours grow untrimmed? I bought some TC AR Mini and it was clearly purchased and labeled as Mini, but untrimmed it grows upwards of 7", so not what I wanted. Tank looking good, BTW.
I have been very "lucky" with AR Mini: very thick, deep red and constantly expanding (have to thin it out about once a month). Mine also tops out at around 7-9 inches, at which point I trim that section near the base. Not all of the stems reach that height, just an occasional one in the center of the clump. @Greggz
: thinking a little more about this, I wonder if they are sensitive to high NO3, as you do. Maybe @Asteroid
can comment on his NO3 level.