Your experience going from internal to external pump

[SirReefer]

I currently have a mag drive 9.5 in my sump area for my 75dt. Current tank temp with lights on is 82 I wanted to now from those who have had internal and switched to external if the temp decrease was a substantial difference.. I am considering this and going to a pan world 50xx

Any advice or opinions are welcome also thanks

 

[mc-cro]

mags put off a lot of heat. For example, I run a mag 12 in my 50g water mixing station. I can raise the water temp from less than 70* to over 85* over night by just letting the pump run. I dont need a heater.

so, yes, an external will put less heat into your tank.

 

[reefgeezer]

I use a Mag 7 to run my skimmer. A Panworld 50P-X-X (external) runs the return. When I run only the Panworld, the tank stays around 79 F. When running the Mag 7 also, it runs around 82.

 

[r-balljunkie]

buy a better internal pump. eheim 1260/1262. problem fixed.

 

[uwbadgerfb]

I agree with r-balljunkie buy a quality internal pump like eheim or waterblaster and solve the problem.

 

[markster33139]

I was comparing the wattage on a Mag 7 versus an Eheim 1260, and I noticed that it was 70 watts vs 65 watts. Considering these two pumps are very closely rated in output, would there be a significant difference in the heat output between these two seeing as they are only 5 watts apart?

 

[Reefnut2010]

Mag 18 in the winter, Water Blaster in the summer. Works out well...lol.

 

[SirReefer]

Yea I was looking at the eheim pump but for the price would it be better to go with an external pump ? An also + 1 to markster question

 

[SirReefer]

Mag 18 in the winter, Water Blaster in the summer. Works out well...lol.

I live in Miami.. We spend the winter times at the beach here lol

 

[barjam]

I was comparing the wattage on a Mag 7 versus an Eheim 1260, and I noticed that it was 70 watts vs 65 watts. Considering these two pumps are very closely rated in output, would there be a significant difference in the heat output between these two seeing as they are only 5 watts apart?

One would act like a 70 watt heater and the other a 65 watt heater. Assuming the listed wattages were correct and both were ran internal.

 

[swcc]

I currently have a mag drive 9.5 in my sump area for my 75dt. Current tank temp with lights on is 82 I wanted to now from those who have had internal and switched to external if the temp decrease was a substantial difference.. I am considering this and going to a pan world 50xx

Any advice or opinions are welcome also thanks

run this pump.... http://www.marinedepot.com/Tunze_Re...uarium_Powerheads-Tunze-TZ1737-FIPHFF-vi.html
mag 9.5 is insane overkill in flow.

 

[mtaquarist]

Is it the friction that causes heat or just the power that runs through it?

 

[r-balljunkie]

i wouldn't compare wattages as a barometer for how much is transferred into the water as heat. The eheim is built like a tank, and I would surmise its insulated a bit better. Just because you have a 2.0 4 cylinder engine doesn't mean the output is the same, even though they are the same size. Regarding externals, my reefing philosophy is to keep it contained, wherever possible. .internal pump, internal skimmer, reactors in sump etc. Just my outlook. Tons of folks ruin external pumps, but usually when you get into larger systems needing more water flow than what is practical with an internal pump.

If you go with an external, this is one more point of leakage, or possible accident.

Just my .02 cents. Ive mopped more than my fair share of floors. We have a set of bath towels dedicated to tank duty"¦"¦"¦"¦"¦stuff happens

 

[r-balljunkie]

dreaded DP

 

[SirReefer]

Is it the friction that causes heat or just the power that runs through it?

Power that is running I believe, brs has a video comparing both external and internal but I wanted to see about how much will it decrease by

 

[SirReefer]

I really like the tunze and the water blaster they seem to have a lot less wattage

 

[mussel and hate]

Is it the friction that causes heat or just the power that runs through it?

These are diffenent sides of the same coin. Just flowing electrons through copper wire heats the conductor. I guess it's sort of like electron friction.

If a pump is submerged it may as well be a heater of the same wattage regardless of how efficient or well insulated it is, all the energy is trapped in the system until exchanged. An external pump may introduce less heat into your system IF it is cooled by some other means such as the air in your room circulating over the pump housing.

IMO anytime you can avoid a submerged electrical conducter you should do so.

 

[mtaquarist]

These are diffenent sides of the same coin. Just flowing electrons through copper wire heats the conductor. I guess it's sort of like electron friction.

If a pump is submerged it may as well be a heater of the same wattage regardless of how efficient or well insulated it is, all the energy is trapped in the system until exchanged. An external pump may introduce less heat into your system IF it is cooled by some other means such as the air in your room circulating over the pump housing.

IMO anytime you can avoid a submerged electrical conducter you should do so.

Good info! I'm glad I'm learning all this be4 I build my tank

 

[rossco838]

Take a look at a Waveline dc5000 only consumes 40 watts. My local lfs on his central fish system uses a mag 50... He doesn't use heaters. I also have a 65 gallon with a mag 9 and I have a 300 g system with 3000 gallons an hour coming out of the reeflo dart. The only thing I can hear in the room is the mag pump.

Sent from my galaxy S3 using my fingers

 

[swcc]

I really like the tunze and the water blaster they seem to have a lot less wattage

I would suggest Tunze(German) vs waterblaster(china) for sure.