Originally Posted by SantaMonica

There are some things you can do to get your scrubber going (and there is more info in the FAQ below).



Actually you want less that 6500K. 2700 or 3000 is best. And you'll want at least a 23 watt instead of a 15 watt on that size screen. And preferably one on each side.

You'll want to replace the screen with roughed-up plastic canvas (this recommendation was changed after the write-up that you saw). Rough up the screen with a hole saw.

The reason the top of your screen has less algae is because the screen is too smooth (is not plastic canvas), and the rough water coming out of the slot is washing the algae away.



You'll need to get a full screen of thick (hopefully green) algae before you can start counting the weeks. You are not getting any growth yet, because of the screen material and bulbs, as mentioned above.



I have a new write-up for ponds and pools that might help; it's at the scrubber site, in the Design section.



Every 7 days, no matter what.



Would be a huge help.



Yes. If built properly, your macros will die.