New wavemaker- awesome!!!

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DerekW,
You are correct. The only head in a closed loop is friction head.
The static head is 0'. If the pump was sucking faster than it could be supplied with water, it'd cavitate.
This is why you dont put a 3/4" suction on a closed loop pump...
HTH
Chris
 
DavidP,
I'd like to see those calcs. Got a link?
If the flow in the piping going down to the pump is flowing faster than gravity (which you should not run it faster than 4' /sec) then it STILL is only seeing friction head.
All piping and fittings must be included in this calculation, not just the discharge side.
Good discussion!
Chris
 
I dont have a link, but I was thinking that if 28" of H2O= 1psi, even if the pump is 4' below the suction, the pump is pushing out water much greater than the 4 psi that would be falling into the pump, then the pump must be sucking the water down the hose. So if that is true then the water pressure couldnt be the same on both sides of the pump.
 
Isn't this thread about a wavemaker :(? You guys are really trying to split hairs here.... get a pump larger than what you need and then throttle it back with a gate valve so that it doesn't rip the tissue off of your corals.... :)

-not trying to be harsh, it's just that I think you might try starting a new thread about closed loop head loss to have a more meaningful discussion of the subject ;)
 
I'm trying to use the head-loss calculator on my proposed setup. Would I just use 4 90's (one for the oceansmotions, one for the entrance to the bulkhead x2, since two ports will be active at once) and roughly 8 feet of vertical pipe (4 feet x 2 )? Does the oceansmotions valve have more loss than a single 90? I'm thinking about using the panworld 50xx pump, the LG 4mdqx-sc, or the velocity t4.

Then I'm guessing I take the result and divide it by two to get the flow per nozzle. I'm getting 400-500 gph per nozzle. Would this be too much coming out of a 3/4" nozzle? In my current 29 gallon I've got about 300 gph from a 3/4" and it could definitely be better...
 
ronbis said:
I'm trying to use the head-loss calculator on my proposed setup. Would I just use 4 90's (one for the oceansmotions, one for the entrance to the bulkhead x2, since two ports will be active at once) and roughly 8 feet of vertical pipe (4 feet x 2 )? Does the oceansmotions valve have more loss than a single 90?
Click to expand...

The RC calculator includes an option for outputs, so yes, divide by two, you're dead-on on your calculations, FWIW HTH
 
I have a mag 9.5 and a mag 12. Im going to try the 12 first. I have mine plumbed to a chiller then it will go to the 4way so Im going to lose alot of flow.
 
Just ordered my 4way! Still haven't decided on a pump. I've heard the velocity will transfer lots of heat, so I'll probably go with the LG. The ad on drsfostersmith.com says it's a new quieter design...
Does anyone know if the blueline/panworld pumps are less noisy than the LG's?
Just ran my setup by a couple of the fluids engineers I work with and they thought it sounded good. I may have to go SPS now with my newfound flow :)
 
please start a new thread on head lost and etc. I want more infor on this wavemaker products and pumps used so that i can make a mre informed decision. as of now, the the arguments about head lost though constructive and informative, but i want more infor on the wavemaker and pumps used.
 
got that tank in the apt. fresh water tested it for like 10min. the stand pipe wasn't working right so had to shut it down

got it all level and getting ready to go

testing the 4way in the next couple days

Lunchbucket
 
Lunchbucket,

Anxious to hear what you think of the flow you're seeing, since my planned setup will be similar. I think I may go with the Panworld 100pxx for more flow. Did you split all your outlets into two with the "y" pieces?
 
ronbis - the panworld 100pxx is the same as the iwaki 55rlt right? opps it is like the md40x well the iwaki 55rlt i have compares to the 150PS (panworld) the iwaki is noisy but sure puts out some water!!!!!! i have never had a REAL external pump so this is a new sound. i heard the panworlds were more quiet

i used TWO of those 3-way 90's the back two outlets have them on it so they shoot 90degress apart. the front outlets (w/out the 3-ways) just shoot to the opposite corners of the tank. w/ them being right up close to the front glass i couldn't put them on there w/out having WIERD flow patterns (like one shooting lenghthwise across the front glass and the other shooting directly at the overflow)

Paul - all up and running and i got rid of the bubbles (well the big ones anyhow...need a big light on my tank to see if there are micro bubbles!!!) the cap on my inlet (hang on style) wasn't sealed good enough. retaped it and screwed it on TIGHT and NO MORE VENTURI.

this wavemaker is AWESOME!! i can't wait to see what hte corals are gonna do. and to see exactly what my flow patter will be like!!!

hope to update pics later this after noon!!

thanks Paul YOU ROCK!
Lunchbucket
 
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