Hey thanks for all the tips! I'll see if out pet shops sell base rock, and I think I'll give that a go, I can't believe how fast it spread to all your base rock Gazog! Your live rock looks so good! I have seen some live rock online, and it is a bit cheaper, but we don't have many websites in Australia that ship this kinda of thing, and you had to buy 20 kilos at once! That was a bit too much live rock at once for us, so we went for the buying it slowly from the pet shop option Thanks for the powerhead tips too Wastemanagement. Your tank looks awesome too, by the way! Our powerhead outlet can't be tilted or anything, so if I point it at the front of the tank it's going to be at a 90 degree angle, straight ahead, we can't point it up or down either. We thought maybe the water would just come straight back at it, and not circulate around the tank, will it not do this? Or do you know of another way we can make the water flow at more of an angle? Thanks!