RETURN PUMP CHOICE

[Myka]

In reference to internal vs external, my choice depends on how much heat I want to add to the tank. Generally, internal pumps add more heat to the tank than external pumps - though this is not always the case. If your system will run cool (LED lights, in a basement, etc) then a pump adding heat to the system may be a GOOD option as it will help save on heating costs.

Are you doing a single return or dual returns? Your options will be different if you're needing one larger pump or two smaller ones. Assuming your 100 gallon sump will have about 50 gallons of water in it, you're looking for about 2100-2600 gph total return flow. If you're doing a Herbie overflow then I would suggest you use a single return pump as the Herbie will run better/easier. In that case, Sequence pumps have been a long time reliable go-to. Maybe you want a DC pump? What is your budget? What do you want out of the pump? (hot, cool, energy efficient, value, best of the best, etc)

[TimT]

For a tank that large my recommendation would be to go external. There are several advantages to external;
1. No added heat
2. No ceramic shaft to wear or break
3. No cheap plastic bushings to get distorted
4. No shock potential
5. Minimal cleaning
6. Reliable
7. Does not get noisy with age

If the sump is in the basement and the tank upstairs then you would need a high pressure external like a reeflo etc. If the sump is under the tank there is a good 1/8hp spa type pump for around $240. It uses 1 1/2" in/out quick disconnects and is rated at 3000gph 0' head and max head is 23'. It is dead quiet and uses under 200 watts.

Cheers,
Tim

[Skimmin]

OK that's some great options. I'm not too concerned about cost. Quiet and energy effecient are my biggest concerns.Quiet being #1. The sump is going to be in the stand and is about 112gal holding 75 gallons of water. Total system volume of approx 400gal. I'm planning on running one pump along the top edge of the tank to discharge at the opposite end of the overflow. Who supplies the Abyzz pumps in Canada? They look sweet. I'm quite interested in the DC pumps. I have a mag as a back up incase the primary pump craps out.

[kien]

Lots of great suggestions. I myself have been using a mag18 for the past five years. It has been reliable and quiet.

As evidenced by all the great suggestions, there are a lot of great pumps out there. The only suggestion that I would add is to pick a pump that is easy and/or cost effective for *you* to maintain. If your pump craps out on a Sunday evening or while you're on vacation you would want a pump that's easy to repair or cost effective (or available) to just swap out for a new one. I have a spare mag18 on hand that a tank sitter can easily swap if they ever found my return pump failed. The moral of the story is, it's always nice to have a backup!

[Scythanith]

Originally Posted by Skimmin

OK that's some great options. I'm not too concerned about cost. Quiet and energy effecient are my biggest concerns.Quiet being #1. The sump is going to be in the stand and is about 112gal holding 75 gallons of water. Total system volume of approx 400gal. I'm planning on running one pump along the top edge of the tank to discharge at the opposite end of the overflow. Who supplies the Abyzz pumps in Canada? They look sweet. I'm quite interested in the DC pumps. I have a mag as a back up incase the primary pump craps out.

Marinetech Innovation

[Skim]

I would go with a Jabeo DC-12000 that way you can adjust the flow if you wish. I use the 6000 set a 4 works great. If you think your Mag 18 is quite you got to hear or should say not hear the Jabeo DC pumps. My Vertex Omega pump is louder.

[globaldesigns]

Originally Posted by ScubaSteve

I've gone through a number of Mag pumps for a whole slew of applications as they are cheap and get the job done... but they are noisy SOBs! As they get older they start to rattle more and no matter how much you try to dampen them there is a constant hum from the tank.

I just put a new Sicce PSK1000 on my skimmer and I keep having to check to see if the thing is still on because it's so quiet. I think my pump allegiance is beginning to change...

From the Sicce on my skimmer I am impressed thus far with Sicce. On some equipment for work (which is in my office next to my bedroom) I have an Eheim 1262 - in general it is pretty quiet but it does have a fairly noticeable hum to it. Granted it's not inside of a tank stand but I can hear the hum from the pump in my bedroom.

Hmmm that is weird... First Mag18 was quite, used for 2-3 years. Changed to eheim 1262, as I wanted to be proactive and put a new pump in before there were ever issues. This pump was no more quite than the Mag, however it didn't have the power as the Mag18, so I put the Mag back in... Runs flawlessly and has always been quite for me.

[e46er]

i went through a couple mag 9.5s before i switchd to a reeflo snapper.
added in some tees and now feed carbon and phos reactors off it as well.my shaft seal just went on it which sucks but i got 4 years out of it and went thru a couple mag pumps in 18 months so its something to consider.
ill be hard pressed to switch back to internal pumps