Q: Sometimes my scrubber sprays sideways and gets things wet. How do I stop this?
A: If your screen normally flows properly, the sideways spraying is caused by not cleaning the part where the screen inserts into the pipe. Algae grows right up into the slot, causing the spraying. The solution is to clean up into the slot when cleaning, or (better) remove the screen from the slot entirely when cleaning it. To prevent it entirely, you can make a little "light shield" and attach it to the side of the pipe, in order to shade the top of the screen from light, and also to block any spraying that occurs. You can also just clean more off the top of the screen, so that there is a 1/2" empty area with no algae at all just below the slot.