DISCUSSION THREAD HERE http://www.aquariacentral.com/forums/showthread.php?p=2263441 Please use the above thread to post comments/questions to keep the article, as an article. Hi guys. I'm planning on modifying the ORCA TL-450 and thought I would post a guide of what Im doing as I go incase its of help to anyone. Not sure if there are other guides like this on this forum but I thought I would share my experience anyway. Heres what Im going to do. 1 - Increase flow from outlet of filter chambers 2 - Increase surface agitation of water 3 - Replace stock skimmer 4 - Increase water flow in main tank 5 - Modify hood to allow better cooling 6 - Modify / Add Moonlighting I'll try to post pics as I go and as much detail as possible. So far I have completed number 4 - the easiest. I have added a koralio nano. (Dont think a pic is needed here) Up to this point I have ordered the following. Boyu JAD 308 Skimmer to replace the stock skimmer Maxijet 600 Pump (not to be confused with the powerhead model) Eheim 12mm Flex Pipe Hydor Flo When the parts arrive it will allow me to complete numbers 1, 2 and 3. Number 5 doesnt require any parts (As yet) Just modifications which I will document and number 6 requires parts but this is purely asthetic and will not affect the workings of the tank. Will keep everyone posted. This is the tank at the moment, the day after it was setup so still going through the cycling process.