is this temp ok?

[jay24k]

175 watters will work but IMO are not enough for a 2' deep SPS tank or a 30" tank. Granted, I'm sure the higher demanding corals will live, you just won't get the growth out of a 250. Also 250 watters IMO are great (What I use)but the higher the kelvin, the less light. Therefore I think 400 watters are best for 20K bulbs. I don't think the wattage is the issue. It just might be the length of time running.

 

[kirstenk]

I run 400W'ers with an open canopy. When the lights are on, I have a fan that blows across the sump. My maxium temp swing is 3 degrees. Get a fan.

 

[seminolecpa]

nope you aren't the oddball. I keep mine right at 76-78

 

[Lunchbucket]

i keep mine at 79.1-80.4 MAX!!!

i agree w/ oraganism about temp being in the water parameter list

Lunchbucket

 

[mikeguerrero]

Lunchbucket,

How often is your chiller running to maintain that variance... Mine turns on every 3-4 hours for 3 degree variance of 76.5-79.5

MG

 

[Lunchbucket]

not sure how long it kicks on....really not often

Lunchbucket

 

[Amphiprion]

Try to keep mine at 80-82.

 

[Froggy]

I might be another oddball. I also run my reef 76-77 degrees.

 

[MiddletonMark]

Run my reef at 77-78 degrees in winter, often more on the 79-81 over summertime when I get some daily variance [no chiller].

 

[wrassie86]

<a href=showthread.php?s=&postid=6720483#post6720483 target=_blank>Originally posted</a> by jiggy
i dont have a canopy.. its an open top tank with 2 400w pendants hanging above it...

the temp rises from 80 to 84.6 exactly in 6 hours... i still have the heater in the sump and it is set at 80 degrees... maybe if i take the heater out, the dark temp will be like 78 and the temp with the lights on will go up to 83..

is it safe to have the temp at 84.6? i have read that some people keep their reefs at like 84-86 degrees..

How warm are you keeping your home?
I used to run 3x400w on a 125 in a enclosed canopy with 4 fans and never had a heat problem during the winter.Summer is a whole different story tho.But i use a chiller for that, my tank stays at 78-79 What is your pump list like?

 

[jiggy]

nevermind.. somehow my tank temp equalized.. it is now 79 with the lights off and goes up to 81 with the lights on.. hopefully the temp doesnt change that much in the summer since my tank is in my room/basement n it stays pretty cool there..

i run 3 seio 2600s and a mag9.5 return

 

[wrassie86]

Another thing that would help alittle is ditching the Mag pump.
I 've been using the new rio hyper flow pumps for over a year now and love them, that mag does 950gph @93 watts
you can get a 14HF 840gph@40watts or a 17HF 1090gph@55watts both will save you a few bucks and keep your tank alittle cooler for this summer.