I have one fan at the top of my hood pushing the hot air away 24/7.  It is setup on the far left side of the hood so it can draw in cool air from the room temperature and blow it across the top of my hood to the other side.

I have one fan running 24/7 directly on the water surface.  The other fan that I have running directly on the water surface only kicks on when my MH turn on.  These two fans are hitting the water at a 45 deg angle because that was the steepest grade I could get with the room I have to work with.

The actual room temperature usually runs about 72deg.

I don't have a problem with reducing my HM photo period.  I just figured the more the light the better growth from my corals.  No??

That's much, much better. Are you willing to work on it a little more to get it down to 78 max? If so, please fill in some missing info.

Are the fans running 24/7 or just when the MH's are one?

Are the two fans taking air from outside the canopy?

Can you give us a measure of the angle at which the air from the fans is hitting the water? and how much are they angled in to the canopy area?

What is the actual room temperature?

And last, would you be willing to reduce the MH Photoperiod by 2-4 hours?

Sorry for all the questions, but this info really does make a difference.

Okay, I see the problem. What you are starting to think is right. But there is more.

Remember that hot air rises above cooler air. The fans are pushing hot air from the ceiling down past the hot lights and with all the lights in the path, the heated air probably doesn't hit the water directly. This is why there is practically no cooling effect.

Flipping the three fans around so that they suck instead of blow will cool a little better, but that option would not make best use of the fans cooling power and it corrodes fans to pull humid salty air past them.

Here are some other options that will do the job.

-- Drill holes and mount a fan on each side of the hood, blowing in.

-- Mount a fan on each side of the hood in the back opening and place it on a bracket so that it's aimed diagonally down across the surface of the water.

The second option is the most effective way to cool the tank. Both options eliminate your two 24 hour fans altogether (the sump fan is definitely useless). With three holes already cut in the top of the hood, there will be ample avenues for hot air to exit and the cooling/evaporative effect of pushing cooler air over the water surface will do such a good job that I'm guessing the fans can be set on the same timer as the MH's.

After the change, please come back and tell us how much better the tank is looking with the temperature at 80 and below.

I forgot to mention that I run two blue 4' VHO's as well.  This is how I setup my tank:

I run 2 fans 24/7.  About 11a.m. my two blue VHO's kick on.  Around 12 noon my 2 MH kick on along with my 2 other fans.  Around 10p.m. my MH turn off along with the 2 extra fans.  About 11p.m. my 2 blue VHO's turn off.  So my photo period is approximately 12 hours.

The comment from Gahlenfr is making me think.  I might be pushing hot air around.  I have one fan 24/7 blowing on my sump (no cold air coming in).  I have all other 3 fans blowing down from the top of my hood.  Yes, I have an open hood so all my fans blow down onto the water.  However, the top of my hood is only about 6" from dropped ceiling.  So I don't have a lot of clearance.  Could that be my problem?