Lighting change....

[Bill S]

I think I'd upgrade to a 90, at least...

[ErikH]

120 tall!

[RayAllen]

Yep more water volume will be needed to distribute the heat.

[tropicana]

The reason I bought these was, I will be moving this summer sometime. We will purchase a house most likely this year. When I do, I am going to upgrade my tank to at least a 180+ So I figured I would run them in my 55g until then, buy new bulbs when I upgrade the tank and Im set..... At least I can now have some Blue Torts I have to see how I am going to buy a chiller... Im thinking of Trading my system in my car for a kickass chiller.... Anyone? Ive got 2 JL Audio 12w7's in a Custom box.... They are $600 brand new EACH sub! Less than a year old!

[bronck83]

Why not just run 1 of the lights until you get your bigger tank?

[tropicana]

Why not just run 1 of the lights until you get your bigger tank?

Its got a center brace.... I cant evenly distribute it that way.... Btw, Ive ran the lights for 2 hours today so far, I am on constant watch. Im going to turn it off today. Tomorrow I will run it 3 hours and see how it does. The temps stayed between 79-80 degrees. I have a glass thermometer I dropped in the tank and it still is the same as when it was turned on. I will have to check it during the day when the heats are the hottest outside. I hope to sell my system to buy a chiller just in case though. I think with having the lights higher off the tank, it helps ALOT with the heat, the fans running directly under them help too. I still get great lighting. Ill post some pics.

[brewercm]

I ran two 400 watt 10K AB's on a 75 for quite a while and didn't have too many heat issues but I had a good size clip on fan from WalMart running over the water. Lot's of evaporation though (about a gallon a day) so be ready for that, I'd say my water never got above 80 to 82 which was a little hight but not terrible. I did it for the same reason so I could upgrade later but now I'm back to 250s on my 140.
Just keep an eye on the temps and your evaporation rate.

[ErikH]

Its got a center brace.... I cant evenly distribute it that way.... Btw, Ive ran the lights for 2 hours today so far, I am on constant watch. Im going to turn it off today. Tomorrow I will run it 3 hours and see how it does. The temps stayed between 79-80 degrees. I have a glass thermometer I dropped in the tank and it still is the same as when it was turned on. I will have to check it during the day when the heats are the hottest outside. I hope to sell my system to buy a chiller just in case though. I think with having the lights higher off the tank, it helps ALOT with the heat, the fans running directly under them help too. I still get great lighting. Ill post some pics.

You got the right idea, the fans under the lights should help to dissipate some of that heat for sure. The hottest part of the day is going to be the kicker though. You may need more fans!