how many Amps do I need in a fish room?
 

Will 2 - 20Amp breakers be enough to run a 300g setup

Obviously depends on what I'm running, but I have accounted for everything and it should be enough, but have no first hand experience. So any help would be great

I added four 20 circuits for my 390. I wanted to spread the load.

I have 6 - 20A circuits for my 600 g and system.

I'm in the process of planning a ~250 gal reef and I plan to install a subpanel in the room with (4) 20A circuits. I don't believe I'll ever need more than 40 amps continuously, but I'll also have some power tools connected to this panel.

bummer just when I think I'm making progress. More money to forkout. But best to do it right.

4 x 20 amp (110v)
1 x 20 amp (220v) for chiller

I have 3 20A circuits but wish I had a forth circuit. Really looking back 4 15A circuits would have worked better for me than 3 20's.

Agree with above.

I am looking at two 20a circuits just for lights and powerheads on my 300.

Will probably use two more in the basement for the equipment.

Ryan.

that will be more than enough... just put the lights on 1 and everything else on another...

Im going to be putting two 20amp lines in soon for my 210, sometimes my light fixture makes the line pop.

had to do this at my old place as well for my old 180

Wow so all you guys are the reason the price of copper has shot through the roof.

Depends on what your load will be.
I have a 2 hp chiller that needs it own 20a double pole breaker
3- 1K bulbs that each need a 15 a breaker (well at least in my mind they all should have their own)
4- reeflo pumps and 4 tunzes and a host of other small items that have 3- 15 a circuits as well.

So a total of 8 slots on the breaker box for a 600 gal. tank. The thing is I like separate circuits so if one goes down it only takes out 1 pump and some other item, I'd hate to have all my pumps on one and lose everything because 1 breaker tripped.
C

I run 4 - 20 amp circuits on my 270
i run 2 darts
2 om4 ways
2 eheims 1262
ATI bubblemaster 250
2xtunze 6100 w/controller
2x 250w heaters
2xATI 36" powermodules 8bulb t-5
and plenty of extra room

I run 2x20 amp and the original 15 amp.

I run 3 x 15 amp breakers(300 gal with 125 sump) and I was told by my electrician that 1x 15 amp breaker could handle a good 3000 watts of power I use the 3 I do have power bars of course but I also spread the load between the 3.I do have a controller with the power bar and I have lights and pumps plugged into it but I have left room in case I decide to expand on that.I have 2 dart pumps,1 dart skimmer,2 heaters 250 and 300 watt and I need another.My sump is in the garage and the garage is cold so the heaters run often,1000 watts of lights.I have 2 power heads in my sump.I also run a kalk reactor and 3 aqua medic doser pumps but they don't run often.