Chalices should be placed in low to medium flow. I have t5's and my tank is 24" deep. I have 3 chalices; 2 miami hurricanes and 1 im not sure. One is at the very top (80%) of the tank, one of the hurricane is about 1/2 way up and the other hurricane is on the sandbed. All are in a low to medium low flow area. All are always out feeding and growing like a week. I'm actually really surprised at the growth I've gotten out of them. BTW, I have 2 of the miami hurricanes in anticipation for putting one in my cube and placing one in it!

As far as lps/sps....I'm not sure. I would guess lps but I have seen some places list them as sps....so not really sure on that one?