Closed Loop vs. Tunze (500 gallon Display)
- Thread starter 46bfinGA
- Start date
eductors pull in surrounding water to multiply their output 3 -7 times, depending on the pressure head or power of the pump driving them. so, water flows towards the back of the bell from a rather large area, then flows out like the pattern of a shotgun blast, narrow at first and widening quickly, overall a mass water movement. they are used for mixing large vats of paint.
Roland Jacques
Premium Member
Heres thread on a cheeper brand of eductor. I have not used this brand yet.http://reefcentral.com/forums/showthread.php?s=&threadid=1257354
Dart pump is kind of ify IMO when using eductors. You have to look at the pump curve. Figure out how many you can run with one dart pump and still have 300-400 gph at each nozle. Personaly i would not use them with a Dart unless maybe i wanted to try it on a closed loop. You need at least 5 psi at the nozle to get them to start working good. You just have to do the math i dont think overall youll gain any flow with that pump. Maybe a little velosity.
Say you try to run 4 geting 300gph at 4 psi. Eductors Xs it by 3 = 900gph per nozle for a total of 3600 gph. what the dart do on its own 3600? i dont think it could run 3 eductors much less 4.
Dart pump is kind of ify IMO when using eductors. You have to look at the pump curve. Figure out how many you can run with one dart pump and still have 300-400 gph at each nozle. Personaly i would not use them with a Dart unless maybe i wanted to try it on a closed loop. You need at least 5 psi at the nozle to get them to start working good. You just have to do the math i dont think overall youll gain any flow with that pump. Maybe a little velosity.
Say you try to run 4 geting 300gph at 4 psi. Eductors Xs it by 3 = 900gph per nozle for a total of 3600 gph. what the dart do on its own 3600? i dont think it could run 3 eductors much less 4.
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Well if I used them,I would only have 2 Returns max. I was originally planning on only one return until Elliot talked me into 2. I was basically planning on having my sump return to provide flow across the top of the water. And use my Closed loop to provide flow in the rest of the tank using a Barricuda with outputs being on the top of the tank with Om Revolutions.
I saw those when that thread first appeared.I was hoping to have a 1" Eductor since I plan on only 2 returns. What do you think? Im not opposed to scrapping the Eductor idea if you dont think it would work with a Dart.I dont want to use a bigger pump for my Sump return so that is out.
I basically agree with Roland, the DART is ify, but I think it may give you a bit more flow than not using eductors, I do think two returns facing each other at the ends of the tank colliding and creating chaotic flow are better than one going across.
I started out with a DART as my sump return and a Barracuda on my cl, no eductors, both had 4 outputs each through locline. I was not happy with the flow so I added eductors to the cl and sump returns, the DART was too weak but keep in mind my sump is 50 ft away from my display, so I changed it to a Pan World 250.
I started out with a DART as my sump return and a Barracuda on my cl, no eductors, both had 4 outputs each through locline. I was not happy with the flow so I added eductors to the cl and sump returns, the DART was too weak but keep in mind my sump is 50 ft away from my display, so I changed it to a Pan World 250.
Lucky Strike
New member
Just putting my experience out there, but id never run a cl again, ever. Its a waste of electric, and with two darts on a 180, i am waayyy unhappy. im using 300w 24/7 and only getting at best 7000 gph. hell people are getting 2000 gph on maxi mods, and if you use a tested product - the korlin at 1200 gph on 8.5w do some multiplication and thats say 6 x 8.5w = 52 watts. anyway just food for thought.
I have try the wavysea with both tunze 6200 and 6100. With the 6200 the wavyseas seem to have problem. I had it up for 2 months on the wavysea plus version. It started to make funny sound so i took it off line and hook up the 6100. Wavysea work fine with the 6100 but not the 6200.
steve the plumb
In Memoriam
The vortechs are much more simple.The tunze are an eyesore way to big.You can have them on the top corners of the tank facing towards the middle but they are big and if you don't want the bracket then you need to buy the magnet.Those new tunze pumps that due 5000 gals are frikkin huge.I went to my LFS and saw them in person and they are way to big.You are better off getting a wave box at least its not as ugly as the powerhead.
