Hi, I have a 80cm x 80cm cube that is 70cm in height. I plan on using an Aquamedic Oceanlight plus fitting. This fitting has 1 x 150w MH & 2 x 24w T5's. The MH is a 20k should I use 2 x 10k T5's or are blue's fine? Also, can I run the 2 T5's for 12 hours & the MH for only 4 hours daily? I have SPS, LPS & softies.