diy Mixing eductor-driven fractionation - Page 2

Pro_builder · 01-20-2004, 07:03 PM

The water is under preasure nad already moving forward. That causes the vaccumm to suck in the air. Then if you run a 3/4" inlet from the pump you jump back to atleast 1" for the rest of the piping to the skimmer. This in turn, makes it so you have no back preasure.
Does this make sense?
I am running one of these on my CPR SR-9 with a Rio 3100. It works a lot better than the stock setup.

johnlewis · 01-21-2004, 11:39 AM

Does the ball valve on the air intake side of your reduct the sound and control air input, or what exactly is it's function. Do you need a 900gph pump or would it work with a smaller pump ?

Pro_builder · 01-21-2004, 12:28 PM

The ball Valve was in case I needed to adjust the air intake amount. I didn't glue it in, just set it in place. I am no longer using the valve.
There is a Ball Valve after the intake pump to controll the amount of water flow.
I haven't tried to use a smaller pump. this system needs head preasure to work properly. that is the reason that I am running the larger pump.
I would think that you could run a smaller pump as long as you reduced the size of the eductor too.
say a 450 GPH pump, you would run a 1" eductor instead od 2".
Does that make sense?

johnlewis · 01-22-2004, 07:46 PM

That makes sens sounds like it's my next DIY upgrade for my venturi.

StoneyReef · 01-24-2004, 10:55 PM

OK Pro

I built the first one on the thread over on TRT sounded like a jet taking off. Plus the skimmer production was so variable. Did you build the first version or did you build the second version with the end of the barb recessed further into the eductor housing. Did you build it exactly to specs or did you change it a bit. I would surely be interested in how you got it quiet and so forth.

Pro_builder · 01-24-2004, 11:17 PM

Patrick, I never seem to build anything exactly to specs. I recessed the hose barb about a 1/4". Then instead of just letting the 2" elbow stop there I slid a 2" pvc pipe into it, about 12" long. This stopped the noise, of the jet airplain. As far as it being variable, I just put a valve on the air input side, this allows you to adjust the amount of air input. Then just put a valve in the input line to the eductor from the pump. Works great and kick the becketts.... ....well you know what.

StoneyReef · 01-24-2004, 11:20 PM

well perhaps I will give it one more shot!

01-20-2004, 07:03 PM	#16 (permalink)
Pro_builder DIY Moderator Join Date: Nov 2003 Location: Oxford, Iowa Posts: 1,746 View Gallery Karma Komment	The water is under preasure nad already moving forward. That causes the vaccumm to suck in the air. Then if you run a 3/4" inlet from the pump you jump back to atleast 1" for the rest of the piping to the skimmer. This in turn, makes it so you have no back preasure. Does this make sense? I am running one of these on my CPR SR-9 with a Rio 3100. It works a lot better than the stock setup. __________________ -Troy 180 gallon Reef, 3- 250 XM 15K MH Electronic ballast, 380 watts VHO Actinics, 2- 5 watt LED Moon lights, 100 gal rubbermaid sump, 75 gallon Fuge, ETSS 600 Skimmer, 4700-5400 gph pump for return, Octopus 3000 controller, Iwaki 40 RL skimmer pump, 2- 65w PC 10K fuge lights, 2 55 gallon barrels, Custom light oak stand and hood, misc pumps, extra 600 gallon rated tank size protein skimmer. Purple tang, yellow tang, pacific blue tang, 2 green chromis, 1 Sand sifting star, snails, hermit crabs, 2 mated perculas, pulsing Xenia, Anenome, mushrooms, ricordia, zoanthids, kenya tree 1 1/2" tall, misc other hitchhiker stuff. DIY is my dream... ...well OK the only way I can afford this Addiction!! Just as the light goes on in my head... ... I break the bulb!!

01-21-2004, 12:28 PM	#18 (permalink)
Pro_builder DIY Moderator Join Date: Nov 2003 Location: Oxford, Iowa Posts: 1,746 View Gallery Karma Komment	The ball Valve was in case I needed to adjust the air intake amount. I didn't glue it in, just set it in place. I am no longer using the valve. There is a Ball Valve after the intake pump to controll the amount of water flow. I haven't tried to use a smaller pump. this system needs head preasure to work properly. that is the reason that I am running the larger pump. I would think that you could run a smaller pump as long as you reduced the size of the eductor too. say a 450 GPH pump, you would run a 1" eductor instead od 2". Does that make sense? __________________ -Troy 180 gallon Reef, 3- 250 XM 15K MH Electronic ballast, 380 watts VHO Actinics, 2- 5 watt LED Moon lights, 100 gal rubbermaid sump, 75 gallon Fuge, ETSS 600 Skimmer, 4700-5400 gph pump for return, Octopus 3000 controller, Iwaki 40 RL skimmer pump, 2- 65w PC 10K fuge lights, 2 55 gallon barrels, Custom light oak stand and hood, misc pumps, extra 600 gallon rated tank size protein skimmer. Purple tang, yellow tang, pacific blue tang, 2 green chromis, 1 Sand sifting star, snails, hermit crabs, 2 mated perculas, pulsing Xenia, Anenome, mushrooms, ricordia, zoanthids, kenya tree 1 1/2" tall, misc other hitchhiker stuff. DIY is my dream... ...well OK the only way I can afford this Addiction!! Just as the light goes on in my head... ... I break the bulb!!

01-24-2004, 11:17 PM	#21 (permalink)
Pro_builder DIY Moderator Join Date: Nov 2003 Location: Oxford, Iowa Posts: 1,746 View Gallery Karma Komment	Patrick, I never seem to build anything exactly to specs. I recessed the hose barb about a 1/4". Then instead of just letting the 2" elbow stop there I slid a 2" pvc pipe into it, about 12" long. This stopped the noise, of the jet airplain. As far as it being variable, I just put a valve on the air input side, this allows you to adjust the amount of air input. Then just put a valve in the input line to the eductor from the pump. Works great and kick the becketts.... ....well you know what. __________________ -Troy 180 gallon Reef, 3- 250 XM 15K MH Electronic ballast, 380 watts VHO Actinics, 2- 5 watt LED Moon lights, 100 gal rubbermaid sump, 75 gallon Fuge, ETSS 600 Skimmer, 4700-5400 gph pump for return, Octopus 3000 controller, Iwaki 40 RL skimmer pump, 2- 65w PC 10K fuge lights, 2 55 gallon barrels, Custom light oak stand and hood, misc pumps, extra 600 gallon rated tank size protein skimmer. Purple tang, yellow tang, pacific blue tang, 2 green chromis, 1 Sand sifting star, snails, hermit crabs, 2 mated perculas, pulsing Xenia, Anenome, mushrooms, ricordia, zoanthids, kenya tree 1 1/2" tall, misc other hitchhiker stuff. DIY is my dream... ...well OK the only way I can afford this Addiction!! Just as the light goes on in my head... ... I break the bulb!!

01-21-2004, 11:39 AM	#17 (permalink)
johnlewis Scopas Tang Join Date: Nov 2003 Location: Brighton, MI USA Posts: 448 View Gallery Karma Komment	Does the ball valve on the air intake side of your reduct the sound and control air input, or what exactly is it's function. Do you need a 900gph pump or would it work with a smaller pump ?

01-22-2004, 07:46 PM	#19 (permalink)
johnlewis Scopas Tang Join Date: Nov 2003 Location: Brighton, MI USA Posts: 448 View Gallery Karma Komment	That makes sens sounds like it's my next DIY upgrade for my venturi.

01-24-2004, 10:55 PM	#20 (permalink)
StoneyReef No Longer a Member Join Date: Nov 2003 Location: Minnesota Posts: 243 View Gallery Karma Komment	OK Pro I built the first one on the thread over on TRT sounded like a jet taking off. Plus the skimmer production was so variable. Did you build the first version or did you build the second version with the end of the barb recessed further into the eductor housing. Did you build it exactly to specs or did you change it a bit. I would surely be interested in how you got it quiet and so forth.

01-24-2004, 11:20 PM	#22 (permalink)
StoneyReef No Longer a Member Join Date: Nov 2003 Location: Minnesota Posts: 243 View Gallery Karma Komment	well perhaps I will give it one more shot!

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