being an aqualight i'm sure it comes with those mountable legs which put it about 3" above the water..but in a 27 that still might be too close.
what you could do if you're a handyman is do a DIY MH canopy with a 150w hqi or something and make it a tall canopy with fans, then you should be ok. if you get say a 14000k MH bulb you won't need actinc pcs, thus reducing more heat.
and with your pcs you currently have you have 6.8watts/gal which is quite a bit, and since your tank is only 12-13" high, the pcs should still be able to penetrate good enough for acros. someone else will have to say about the maxima, but I don't know much about them other than they need hella light.
