[Daceman]

Just a quote i was sent from a friend about these skimmers, just to keep ya ll on your toe's so you can make sure you keep up the proper maintenance on this skimmers

Quote: If I might chime in on the Orca/Deltec debate I agree that both are great skimmers, but have any of ya'll actually cleaned a sequence pump? Huge PITA if everything goes smoothly, even worse if you experience what I have with the 20 or so pumps we've taken apart. Apparently in shipping, the seal that keeps the saltwater from contact with the outside gets knocked slightly causing it to rust. When you take apart the pump you find a rusty nasty mess and we've just begun stocking the replacement seals so that our pumps aren't out of commision for days at a time. The process can take between one and two hours just to clean the pump, not including an acid bath!

[gnatp2]

What's "the seal that keeps the saltwater from contact with the outside"?
Is that an o-ring? Do you know where to get replacement seals and how to check to ensure that a new pump doesn't have this problem?

Rust is the devil
Nate

[qy7400]

I've had the same issue with the Dart as a return pump. The seal is a composite (can't remember the exact name) on the impeller side and a carbon fiber at the pump side, the seal is made when the impeller is screwed on and the seal is compressed. This is a shot of mine before I replaced the seal, pump ran for 2 years before I had to replace the seal.

Call MDM and they will send you new seals free.

[pecan2phat]

All centrifugal pumps will leak over time.

[gnatp2]

Quote: Originally Posted by qy7400 Call MDM and they will send you new seals free.

MDM?

[juiceguy]

i think there is a detailed process on cleaning and replacing that seal on melevsreef.com, he has the whole procedure laid out

[gnatp2]

Looks like massive rust issues. Will the pump only rust after the seal is leaking?

[cali_reef]

Quote: Originally Posted by gnatp2 Looks like massive rust issues. Will the pump only rust after the seal is leaking?

These pumps uses ceramic pressure plates as the seal on the shaft, they leak from fine grains of sand or coraline algae rubbing between the plates. They all leak after a while.

The rust should not be a problem, since the rust is on the spring and outside of the wet end. The constant leak and salt creep is annoying.

Its funny someone on this board didn't believe me when I mention this as the reason I don't think reeflo is the perfect skimmer.

[Daceman]

Quote: Originally Posted by cali_reef Its funny someone on this board didn't believe me when I mention this as the reason I don't think reeflo is the perfect skimmer.

Hey pierce, being that you left this as a open statement do you care to imply who that may be. Inquiring minds want to know.

[qy7400]

Quote: Originally Posted by gnatp2 MDM?

MDM is the company that owns the Sequence and ReeFlo pumps, not sure if they split as reeflo now has its own website with no link from the MDM homepage.