DIY Red Dragon Pumps, gathering ideas.

[hahnmeister]

That would be a 900lph pump. The AC 901 aka Laguna 900 would work.

 

[JCTewks]

how do you figure pump size from skimmer dimensions? I've always just taken an educated guess...well, just a guess really

do you think it's possible to do a 60" skimmer without force feeding air? oversize the recirc pump to compensate for head loss and add a difuser to take care of the added turbulence.

 

[mavgi]

hahnmeister here look on the # the laguna 5000 :

hard to see it's 74 watt :

 

[JCTewks]

is that on a skimmer michael?

 

[mavgi]

<a href=showthread.php?s=&postid=10933242#post10933242 target=_blank>Originally posted</a> by JCTewks
is that on a skimmer michael?

yes , you can see part of the skimmer in the left side .

 

[JCTewks]

is that the 8"x24" skimmer you have used for other tests? if so, how does it handle 100scfh?

 

[mavgi]

<a href=showthread.php?s=&postid=10929022#post10929022 target=_blank>Originally posted</a> by JCTewks
do you (or anybody) think that one of the smaller laguna's would work on a 6"x60" skimmer w/ a 4"neck?

Jeff you want to try small laguna on your skimmer ?

 

[JCTewks]

<a href=showthread.php?s=&postid=10933339#post10933339 target=_blank>Originally posted</a> by mavgi
Jeff you want to try small laguna on your skimmer ?

I'm just thinking as I go. the 2400's are supposed to handle a 36" height well, so i thought the smaller pumps might handle head well too. I'd like to be able to do it with out an air pump.

 

[mavgi]

<a href=showthread.php?s=&postid=10933337#post10933337 target=_blank>Originally posted</a> by JCTewks
is that the 8"x24" skimmer you have used for other tests? if so, how does it handle 100scfh?

It's 8" on 30" high , i left the elbow as exit and i pull up the pipe inside the skimmer to give option to the water to move out with more flow....

i have max flo 1300 , the pump have small impeller but pull out on the same skimmer 16LPM 45watt . if you want i can send you the pump to test it but you will need to build new volute . the original one to small and i destroy it . if you want let me know i don't have a lot of time to play with this now....

 

[mavgi]

<a href=showthread.php?s=&postid=10933359#post10933359 target=_blank>Originally posted</a> by JCTewks
I'm just thinking as I go. the 2400's are supposed to handle a 36" height well, so i thought the smaller pumps might handle head well too. I'd like to be able to do it with out an air pump.

the 2400 can handle 36" with 10" diameter and 6" neck IMO without problem

 

[JCTewks]

that would be great to test...but I still need to build the skimmer PM me if intersted in parting with it permanantly

 

[mavgi]

<a href=showthread.php?s=&postid=10933419#post10933419 target=_blank>Originally posted</a> by JCTewks
that would be great to test...but I still need to build the skimmer PM me if intersted in parting with it permanantly

Jeff , I'll Send you the pump test it if it's good enjoy it......

send me PM with your address i will send you the pump this week.

 

[loc01]

Hi folks,
This is my Laguna 2400 with the housing mods.

Loc

 

[hahnmeister]

Nice job! Got an air meter and a kill-a-watt? I would love to see that that thing can do.

 

[JCTewks]

I second that, please post what this pump can do

 

[hahnmeister]

What size pipe is that? It looks like it needs a little honing to fit around that o-ring though. What size are your inlet/outlet pipes?

I see that the outlet isnt 100% tangential, so adding some internal baffle/flap at the exit to direct water out might help... alot like the contours that many pumps have in the impeller well to direct water out rather than recirculate more. With high flow/low-pressure pumps they play a greater role it seems since the centrifugal force isnt as great (esp with asperating skimmer pumps). You may not need it, but in case you do...

 

[loc01]

<a href=showthread.php?s=&postid=11052026#post11052026 target=_blank>Originally posted</a> by hahnmeister
What size pipe is that? It looks like it needs a little honing to fit around that o-ring though. What size are your inlet/outlet pipes?

I see that the outlet isnt 100% tangential, so adding some internal baffle/flap at the exit to direct water out might help... alot like the contours that many pumps have in the impeller well to direct water out rather than recirculate more. With high flow/low-pressure pumps they play a greater role it seems since the centrifugal force isnt as great (esp with asperating skimmer pumps). You may not need it, but in case you do...

Yeah, thanks for your inf. I thought of that but in order to get the correct height the out let is slightly off tangent howerver if you look at the quiet one they are also not tangential at all. Anyway with the stock volute I was able to get 50lpm with 5 layers of mesh, hopefully I still be able to at least getting the same or better(both intake and exhaust are 1"ID).

Loc

 

[hahnmeister]

No, the Sicce made pumps arent tengential... but I do think it helps, esp with larger diameter volutes.

106.5 scfh. Pretty good. 1" PVC for the venturi?

 

[JCTewks]

do the electronics in the 2400 make it start in the same direction every time, or is it just most of the time like other pumps?

 

[hahnmeister]

every time