flygja, the powerhead seems to work just fine for 2 bps. Yes, water breaks the CO2 bubbles and pushes them thru the plastic spirals in the cylinder.
At the bottom of the cylinder i have a strainer that holds the small bubbles even longer, giving it a higher efficiency.
By the way Alex, you didn't mention how many grams are diluted in 1 litre of tap water?'Micro' Trace Mix Plus formula with : - Boron 1.06% - Copper 0.23% - Iron 8.2% - Manganese 1.82% - Molybdenum 0.15% - Zinc 1.16% all in 1 litre of tap water. I dose around 7-8 ml a day.