hello all...
I am very glad with my scrubber, but there are some caveats.
There should not be too much water circulating, there might happen some spills outside the sump.
My algae scrubber has about 45 cms lenght, there aren't any holes
see here:
http://vimeo.com/6896499
it's a big slit, where the net is suspended.
Inside the pvc tube, there is a smaller tube, where the net is folded (I am using "2" screens of plastic net, in reality is only one, but folded inside the pvc tube), this smaller tube prevent the folded net from falling between the slit.
I think if you watch the video you understand.
There are many perpendicular slits for better flow of the water, more perpendicular slits, the less possibility to get some spils.
If you make some sorte of shadow on this slits, the better... we don't want that "holes" slits, to clog...
I do not have any problems, only one side is getting light (it's enough), I had already taken out all the traditional lighting and put leds...
less electrical problems (if we get some spill), there is only 12V...more safety....
of course you could put some barriers, I don't have any, and never had any problem.
when some of the slits are clogged, there is more speed in the other slits...
I move the folded net, within the pvc tube, and...like magic...it clears all the slits...
Of course If I put an 6000 return pump, I might get problems...the more the flow the more likely it will spill outside.
plastic panels producing barriers might be a good idea...
like I said I did not make that...with some months of algae scrubber, I think I am safe...
but **** happens...
It's kind of dificult to me thinking in portuguese and translating with my bad english to you...