it´s doing oke. but can be improved. the wallichii for instance is still a bit ratty. I would like to exclude a microelement deficiency by overdosing. In addition, I would like to see what could happen to a tank when your overdosing. what are the symptoms? but if I understand corectly, there are none, except an empty wallet....

@tom,
I will try to get a better flow. there are enough pumps: 1x eheim professional, 1x 600 watt powerhead (with CO2 inlet) and a 900 watt powerhead connected to an external co2 reactor (this one is not pumping too fast).

thanks!

yme