Iwaki pump + heat

[Blue Spot Octopus]

So I have an Iwaki pump it is a 30, it has the cocked eye return does not go straight up, so my question is does this pump add heat to the water?

 

[outhouse]

I have a large one that runs warm, and a little one that runs hot.

They dont transfer a lot of heat due to their design.

I dont us my little one, there is no reason and they are greedy little electricity pigs/

I replaced mine with a DC jabao pump and ill never use the iwaki again. The DC pumps run ice cold and use 10X less electricity for the same flow.

all that heat you feel is wasted electricity. I dont know about you, but I have to many plugs being used a sit is, without some greedy piglet sucking at my wallet

 

[DCR]

All pumps add heat to the tank. External pumps like the Iwaki are generally going to add somewhat less heat to your tank than a comparable internal pump because the motor is air cooled and pretty well isolated from the pump case. They do generally consume higher power which may offset the heat balance somewhat, but I doubt it will overheat your tank unless it is way oversized for the size of your tank.

 

[Blue Spot Octopus]

So I was thinking about using a pump that can heat to my tank, it is going to be winter soon, and I have a 250 watt hater and a 500 watt heater for my 120 gallon tank, so if I can get a pump that adds 4 degrees to my tank I can get rid of one of my heaters. I do not live in a cold state, so the heater to the house is usually one once in the AM to cut through the morning chill.
Maybe I need a Pan World pump or the twin of it, the name escapes me.

 

[nereefpat]

so my question is does this pump add heat to the water?

Yes, some, but not as much as a submersible pump.

The DC pumps run ice cold and use 10X less electricity for the same flow.

No way it is anywhere near 10x less.

Maybe I need a Pan World pump or the twin of it, the name escapes me.

Pan World and Blue Line are basically the same external AC pump as an Iwaki. If you want to get more heat from your return pump, then you want a submersible one.

 

[outhouse]

My large iwaki sucked juice so bad my jebao paid for itself in a year. That pump uses 2 X less as my basement return pump. My small hot iwaki for my CA reactor is close to the 10 X I stated. The heat wasted is lost electricity. It's hot
,

 

[outhouse]

These pumps do not add heat. You want heat, run metal halides

 

[nereefpat]

My large iwaki sucked juice so bad my jebao paid for itself in a year. That pump uses 2 X less as my basement return pump. My small hot iwaki for my CA reactor is close to the 10 X I stated. The heat wasted is lost electricity. It's hot
,

I would love to see the math on that. My Blueline 1110 gph pump is 90 watts at full power and zero head, which would be about 6.50$ per month. Any head pressure actually decreases wattage. Unless there is an 1100 gph DC pump that takes 9 watts, your 10x example is off.

 

[outhouse]

I would love to see the math on that. My Blueline 1110 gph pump is 90 watts at full power and zero head, which would be about 6.50$ per month. Any head pressure actually decreases wattage. Unless there is an 1100 gph DC pump that takes 9 watts, your 10x example is off.

Comprehension required. I stated my basement return is 2 x as good not 10. Killawatt shows I'm at 40 ish now not 120 of the iwaki. My ca pump is where the huge difference is. I will killawat it when I'm home

 

[Blue Spot Octopus]

Maybe I will look for an Ehiem 1262, it should work for my 120 gallon tank and I know they add heat to the water.

 

[Cory]

Iwaki wont add much heat at all. Most of the heat comes from the copper windings which in an iwaki is outside of the water.

They might consume more energy but that doesn't mean they arent efficient. My pan world 200 ps uses 290 watts but runs my entire tank from the basement upstairs 15 feet above! It runs a Beckett skimmer, return with a penductor, my algae turf scrubber and my 90watt uv sterilizer. Lets see a dc pump do that. And there is no electricity cables capable of nuking my tank. (In the water)

 

[nereefpat]

Maybe I will look for an Ehiem 1262, it should work for my 120 gallon tank and I know they add heat to the water.

Thats a very good pump

 

[Cory]

You may be able to keep the heat in other ways and not need another pump. You can insulate your sump and tank walls that aren't visible. You could put a glass lid over your tank too.

 

[KrisReef]

A long time ago I put a 3500 gph external pump (not Iwaki) onto a 110 gallon tank. We were living in a small apartment and I did a fresh water leak test for 24 hours with the doors and windows closed without lights, heater, etc. The tank heated up from the low 70's F to over 90F solely due to the water friction and the hot pump giving off heat inside the closed aquarium stand. The ambient temperature inside the apartment was about 80F. That pump had been used on another tank that was set-up with the idea that the water swash inside of their 180 gallon tank wouldn't allow the fish wastes to hit the bottom and they would get pulled into a filter located in the sump. In that system they had added a remote chiller because of the heat build up in their high-flow fish tank but eventually they installed a smaller pump to handle water temperature problems. I got the pump for free and I set it up at home just to see how much heat and flow it could put out on my 110.
-No fish were present during my trials and the pump was replaced with something smaller before I did add livestock to that tank.

 

[Blue Spot Octopus]

I have ordered the Eheim 1262 pump, hopefully it is not too much for my system. I know Eheim's run hot. So I will remove one of my heaters and see what my temps go to and then add the 1262 and recheck the temp.