So I have a L3 rev 2 (I think). I have had trouble getting the bright green algae to grow. So after consulting with Bud I have tried some different things to try to get the proper growth. Rinsing the screen with tank water. I upgraded the flow from a mag 3 to a mag 9. This has caused water to flow down the emergency drain. So I think I'm going to get the high flow upgrade kit. I changed the lighting schedule. First I did a 4hrs on 2 hrs off. I did this this for a week. The next week I kept the same schedule but I removed the diffuser on one side. The side without the diffuser seemed to me that I got better growth. Not green but more growth. The week after that I went to 8 hrs on 4hrs off, with the diffuser removed on both sides. This seemed Increase the growth, but still no green growth. Now that I seem to have good growth (still not green)I'm increasing the photo period to 12 hrs on 12 off. I will see what happens with this light period. Bud had mentioned that I should go to 18 hrs on 8 off. If I get yellow algae back off the photo period a half hour to hour. At this point I'm not sure if I'm going slow increase the photo period from 12 to 18 hrs or just jump to 18 hrs and watch for the yellow gtowth Any tips would be appreciated on how to get the green algae growth.