Here is the back story on the tank. I started this tank as a 110g system 48x18x30, it wasn't drilled and I was using a canister filter. After 30-45 days I didn't like the setup as it wasn't going to allow me to grow and do what I wanted. So I got my current 120g 48x24x24 tank. In the original tank I had 40lbs live rock and live sand. I moved that rock over to the new tank along with another 60-70lbs of fresh out of the box live rock. Sand was also moved over to the new tank. I have been running carbon on the system. I fail to see how this could provide an impact though? Additionally, I'm unsure why I would want to intentionally dose the tank with nutrients just for the purpose of feeding a scrubber, only to have the scrubber remove them? I also already feed pretty heavy so I'm not willing to just waste some food for the purpose of feeding the screen. Just the man I was hoping would see this post Honestly I should have just bought one of your scrubbers for what I paid total to build this thing.... anyways... for feeding I meant I feed 1 cube + 1/4-1/2 additional, so lets call it 1 1/2 total per day. As far as harvest, I've only done this maybe 3 times? That was to scrub off the diatoms. I don't go too crazy with it. My thought is to not touch it again until I see some real growth. Yup, used the teeth of a hole saw. Thanks for noticing Thanks for the heads up, but I just want to let everyone know I've put hours into researching; not only before my build on how to do it the right way but also on troubling shooting issues. I've been all over the interwebs and the problem is, I see people with somewhat similar issues and they get advice but then there is no true resolution or update. I plan to have both in this thread eventually even if that resolution is I gave up lol. Thanks for taking the time to read through the details of this thread and attempt to help figure out whats going on here. At one point I was running the 9hrs per day but I don't think I was at 50%. I think the gameplan moving forward is this: Remove the 2 blue LEDS from each side, replace with more reds. Leave flow where its at for now but I do think I might need to widen my slot slightly because if diatoms get too far up the screen it sprays slightly. Photoperiod - I'm going to try 22hrs/day at 90-100% for 1 week. No one has told me to do that but I personally want to see what it does. If anyone follows Cj's aquarium they will know he had issues with his scrubber and once he started running in 24/7 its been doing great again. Every system is different I know that so this is my attempt to see if this might work. Whats the harm if I have no nutrients anyways Also, a heads up, I will be adding more live rock to complete my aquascape. Not 100% happy with how it is right now. If I have any breakthroughs at all I will update this thread and tell you guys exactly what changes were made. I appreciate all the healthy discussion and assistance!