1x150W defi not enuff for SPS
i have a same sized tank as you..
i think best if at least 250W or 2x150W
i am using 2x150W...and only dare to put SPS right on top..
i find that 2200 a little steep lah..
my tank 12mm thick, with chenggai stand and MH ard 1k only...
but i got all from various sources...