Ghori's notion is correct, the high current prevents Akinsendesmus zoospores from attaching.
This alga is specific with respect to attachment once scrubbed off.
It seems to grow in a few minutes, but is merely reattaching back to the glass.
IU, no, the flow pattern depending on the CO2 input method. Pattern A.
If in line with the filter or with the sump, then the best flow pattern would be the lower direction towards the front on the glass.
This pattern would put CO2 where it
is most effectivem on the lower leaf, that's where the stomata which take in the CO2 are found, not the top of the leaves.
As far as Dennerle's site and info, I've made some critical comments in the past on AQ's forum,
I would bet a wooden nickle I've done far more research than any of these companies or all of them combined with respect to algae and plants.
If they really did the research, don't you think they would have figured out a lot more and reduced the cost by now??




Instead they come out with a new algae cure or product that reduces, retards etc every few months/years.
Gotta make some$.
My methods/suggestions do not make much, but SeaChem sells some of the stuff that actually works.
Greg knows I'm not telling folks to buy RO etc, but they still can suggest it for the person that really wants it.
They will not say it reduces algae in planted tanks vs tap water either...........
Being critcal on an idea or a statement does not imply that I dislike
or have it in for these companies like ADA, Dennerle, Dupla, Algae fix, etc they would have difficult time refuting my comments though.
Their goal is to make $ and meet consumer demand.
. Mine is to find out why and how algae and plants grow well in marine, non CO2, CO2, brackish etc systems.
I share willingly my findings and try to help others muddle through all the hype.
So there is going to be disagreements and conflict.
I'll get a book out sometime next year, so we will see how they respond then.
Regards,
Tom Barr