RAIN2 super growth

This RAIN2 growth shows a couple things. First, the reason you don't see this thick growth on other scrubbers is because their lights are too weak. Second, to clean this you can just lift up the tray (with the pipe) and take to your sink; try that with other box-style scrubbers where you have to turn the water off, disconnect pipes, and take the whole box to your sink so you can scrape the bottom clean. Lastly, if you want to feed your fish, just remove the red cap and slide the screen out and drop it into your display; that's a lot of fresh green food for at least a day!

http://algaescrubber.net/forums/showthread.php?3807-Feeding-scrubber-growth-to-your-fish

Tray cleaning:
https://www.youtube.com/watch?v=a2M_jRx2p_8