Hello! Its taken me a year since first starting to buy the equipment before i got to the point where i thought i was ready to take the dive and actually get the first water cycle started. I finally did that last week and have since realised how much more i need to understand! Thats not to say i wasn't expecting to have to learn more, just that its somewhat disappointing having carefully prepared for so long! Anyway, i have an eaReef 900s, Radion XR30 Gen 3, Nyos Quantum 120 Skimmer, Jecod DCT 4000, REEF - Nano Filter 100 and Vortech MP40 among other probably less relevant things at the moment. Live sand and water went in on Saturday last week and since then its not been the smooth, well planned experience i was hoping for. I have the following issues i was wondering if anyone had any thoughts on. 1) Noise of the drain. The EA Reef tank has the outlets mounted on the back wall ( http://www.evolutionaqua.com/aquariums/images/eareef900-slide-nozzles.jpg?crc=4025885860 ) and because of their orientation ( i think ) they always seem to have air in. This seems to be causing lots of gargling noises which i can't eliminate. I've tried topping up the water so that the outlet is effectively submerged but all that seems to do is put more water in the sump so that it overflows and defeats the point of the various sections in the sump. I've put the pump on full and it still can't keep up despite it seemingly being overpowered for my size of tank. 2) Water clarity. I have to admit i was hoping it'd be clear by now, but its still quite mirky. I'm assuming i need the water to be moving so have got the pump on but no idea if thats right or not. I've read various conflicting reviews about the skimmer being on but what about a filter etc etc? Am i being unrealistic. 3) My skimmer seems to suggest that the water level needs to be 8" for ideal operation. Now, this might be oversight on my part but the first compartment in the sump isn't that deep so how can i achieve that? I did experiment and turned it on but couldn't for the life of me get it to bring bubbles to the top not matter what i did. I'm presuming the water level is going to affect this. I guess with all this, the thing that i've not come across is the 'practical' guide to setting things up. Yes i've read plenty about the things you need, the things to consider but not the actual implementation. For example, i'd love to see a practical guide to managing sump water levels correctly. All in all, pretty deflated. I thought i had set my expectations low enough and expect some troubles but all this combined with a small leak i've recently discovered has not given me the start i was hoping for. Could anyone share any wisdom on any of this? I would really appreciate any spare time people have. Thank you. Andy.