High Tank Temp Help

[grumpygils]

I am just cycling a corner 92. I have 250 MH and 4 X 75 VHO retro on it. When I ordered the stand and hood, I asked for a 12 inch canopy, they delivered a 9-10 inch. I just put in 2 fans but I think the best I can keep it at is about 81-82. Does any one know if that extra 2 inches might make the 2 degrees difference I need? I have the fans sucking out hot air? ANy ideas or comments are most welcomed! :notsure: :notsure:
Mc

 

[jupoc911]

81-82 is fine. Just go for consistancy. Some reefs actually get up to 88! My tank runs 79 at night and 81 through out the day.

 

[cain420]

try having one fan blow in and one suck out, to create a tunnel effect for the fixture. it might help, im not too sure though..

 

[corbin1234]

just a quick question, my tank goes from 81 at night and 83 when the mh's are on, you think that changing temp will effect any corals (specificly when i get into sps's)

 

[jupoc911]

no. you should be fine. make sure you have a lot of surface movement to increase oxygen levels.