I've had a 55 gal sw with a 304 Fluval. I just acquired a 110 glass tank (48x18x21). I also have a protein skimmer and one extra power head. I use crushed coral for my base which is about 2-4" deep. and also LR approximately 50-60 lbs currently. I'm concerned that I do not have enough filteration and water flow within the tank. I do not have a sump or refugium since I'm not very mechanically inclined I've stuck with the equipment hanging over the side. The tubes from the Fluval and Magum 350 only extend about half way down the tank. Do I have enough filteration and flow? Should I get an extension tube so the intake is at different levels within the tank.