How many heaters for 300 gal?

[BioMan]

I've got an estimated 300 gallons saltwater total and using 3 heaters, 250w, 200w, & a 50w,,,can't get temp above 73.8'f in a 68'f room. It's been 3 weeks to get this high and a week at the current temp... and I think it's hit the limit. Suggestions please!

 

[usctom]

To heat a tank 10 degrees higher then room temperature you need at least 3 watts per gallon. So you would need around 900 watts.

 

[Jim]

I'm using 3- 500w heaters on my 300. 2 are hooked up to my Apex and 1 is running independent in case the Apex fails.

 

[tttony]

I'm using 2 -300 watt heaters on a 220 ( fresh water ) at 80 , 65 degree room

 

[Master Shake]

get a good titanium one, or i should say 2 500-800w titanium heaters

 

[cypher]

stop rushing take your time the tank is not ready for fish or coral that y temperature is like that

 

[cmantis]

get a good titanium one, or i should say 2 500-800w titanium heaters

^^ What he said two would be best.

 

[edd]

i have 2 eheim 300w on my 300, keep it at 79 deg

 

[BioMan]

stop rushing take your time the tank is not ready for fish or coral that y temperature is like that

I'm not rushing,, just don't have many friends with tanks this big....an earlier reply by one of our fellow reefers told me 3w per gallon,,,even with fish and coral I'm nowhere near that!!!
While I've got your attention,,does cycling at a lower temp like this have any effect? I'm at the diatom stage.

 

[edd]

the eheim 300w is rated for 159-264gal.
the 2 keep my tank at a steady 79deg with sump in basement that has an ambient temp of 60deg. 68deg where DT is located.

 

[eazy al]

Big heaters but need separate control. These are big boys

 

[eazy al]

The list don't look clear but the have titanium heaters from 300w- to 1500w but they need a separate control.they sell also.

 

[BioMan]

I added 1 of the 2 300w Eheim heaters yesterday and the temp rose from a steady 74.3 all week to 77.2 and climbing overnight. Also I added my in sump skimmer yesterday and Im not sure if that helped out or not, but I'm getting there.