Sicce pumps
- Thread starter Jayson
- Start date
hahnmeister
In Memoriam
Has to be inside... the QO doesnt allow for easy measurement of the outside. I measured the internals on the PSK 2500... its 16mm high, and about 68mm in diameter. The height variance of 16mm to 18mm could just be because you kinda have to guess, or, since the QO 3000 does have a larger outlet, it would make sense that they would have a slightly thicker volute. This would account for the extra output of the QO 3000 despite the same wattage. Im pretty sure that these two are the same pumps though guys. Those who havent had success in the past might be just unlucky... but something tells me that everything the PSK 2500 does, the QO 3000 should be able to do. Possibly more considering the 1" MPT outlet... thats much larger.
Let the modding begin!
Let the modding begin!
JCTewks
In Memoriam
Hahn, how do you think the QO4000 will handle head as a mesh mod?? I'm going to help a friend mod his lifereef VS34 into a recircmeshwheel with a QO4000 he hason there as a recirc venturi at the moment. The vs34 appears to be a fairly tall skimmer, and i'm trying to figure out how low in the body I can get it.
hahnmeister
In Memoriam
I dont know. I would have to see the pump in person to test it out and know.
JCTewks
In Memoriam
Well, I should be doing it next weekend 
I'll just have to get a trash can and see what happens. LOL
I'll be sure and take lots of pics and let everyone know how it goes. I'm afraid my 5-50 meter isn't going to be big enough. Anyone got a 10-100 SCFH meter they'd be willing to loan me for a few days?? or maybe an extra you don't need
I'll just have to get a trash can and see what happens. LOLI'll be sure and take lots of pics and let everyone know how it goes. I'm afraid my 5-50 meter isn't going to be big enough. Anyone got a 10-100 SCFH meter they'd be willing to loan me for a few days?? or maybe an extra you don't need
dudedudedude
Member
In the case of the QO3000, it can handle more head if you allow more water flow, ie increase the water to air ratio at 45 scfh. However, this comes at the expence of more wattage.
dudedudedude
Member
Jeff,
to elaborate, I had one of my first mods on a 6 inch skimmer with 24 inch of head from the outlet of the pump and it did 40 scfh at 35 watts, but I allowed alot more water flow than is has now at 50 scfh at 26 watts.
to elaborate, I had one of my first mods on a 6 inch skimmer with 24 inch of head from the outlet of the pump and it did 40 scfh at 35 watts, but I allowed alot more water flow than is has now at 50 scfh at 26 watts.
dudedudedude
Member
hahn,
Do you think if I decreased the hieght of the volute down to 16 mm that this will improve start up issues?
Do you think if I decreased the hieght of the volute down to 16 mm that this will improve start up issues?
dudedudedude
Member
Jeff,
Becuase the rotational velocity is greater than in the QO3000 I think that if a smaller mesh wheel, ie 40mm, with four layers of mesh was used it would be possible to get 1200 lph at lower watts in the QO4000 than in the PSK2500. If you have enough mesh could you possibly try this out becuase if it seems to work I will probably take the plunge and buy a QO4000. In addition because a 40 mm wheel may be able to produce 1000 lph plus air, I think that a QO4000 will have no startup problems compared to the QO3000 at this output.
Becuase the rotational velocity is greater than in the QO3000 I think that if a smaller mesh wheel, ie 40mm, with four layers of mesh was used it would be possible to get 1200 lph at lower watts in the QO4000 than in the PSK2500. If you have enough mesh could you possibly try this out becuase if it seems to work I will probably take the plunge and buy a QO4000. In addition because a 40 mm wheel may be able to produce 1000 lph plus air, I think that a QO4000 will have no startup problems compared to the QO3000 at this output.
shelburn61
New member
not sure on the 3000, but the 4000 on my closed loop starts every time with no issues...
shelburn61
New member
Does faster rotation translate to smaller bubbles also? i.e. more chopped up
hahnmeister
In Memoriam
yes.
dudedudedude
Member
Update,
I put the QO3000 onto a prototype skimmer and it is pulling after 12 hours in opperation 40 scfh at 28 watts with 18 inch head.
How much head is on the BM200?
I put the QO3000 onto a prototype skimmer and it is pulling after 12 hours in opperation 40 scfh at 28 watts with 18 inch head.
How much head is on the BM200?
hahnmeister
In Memoriam
less than that. The whole skimmer is only about 22" tall, and the waterline is about 6" below that. There is only about 16" of water depth on an ATI.
