I have a 90g (48" wide) ssb tank and was wondering if a muli controller and 2 6100's or a multi controller and 2 6000's would work better? I have sps and some softies/lps I would like as much flow as possible without blowing up the sand, i'm leaning more towards the 6000's but didn't know if i would need the overhead of the 6100's for the pulsing and cool functions of the multi controller. I just don't want to have a sand storm.