my diy needle wheel dart pump

[jnarowe]

Peopel have bought those Tunzes and reported that they do not perform well. In fact it was considered a very costly mistake by one reefer on RC.

Maybe you guys didn't se the pic of my collection cup? That is in the first 2 minutes of start up after cleaning it so no skimmate in the bottom yet. At 120W I think that is pretty good performance especially when I hefted a 5 gallon bucket of totally black skimmate to the sink this morning.

And John, I added those fish today.

 

[jnarowe]

700 lbs. of MI rock.

 

[jnarowe]

Sorry Scott about those last couple...I got confused and thought I was posting in my own thread.

 

[Beenalongtime79]

Gentlemen, let's get off the subject. Hehe. And let's get serious folks, we know that live rock does the brunt of the waste removal.

Sweet fish by the way. It must be nice to have sooo much space in the tank! You must share more pictures in the future once your tank really starts to grow in.

Peace,
John

 

[humboldt reefer]

Hey bill got any 24 hour shots yet?

 

[hahnmeister]

"That is a very common design used by a lot of manufacturers and IMO it stinks. Forcing the foam downward is in direct competition with the desire to get the foam out. I don't believe even allowing the foam to hit the top of the cup is in the best interests of "getting the foam to leave the water column. Just because everyone is doing it doesn't make it a good design. (not that you and others posting here do believe that) When the foam comes into contact with that horizontal surface it begins to compress, and as it compresses it gains weight and collapses. You get some foam out but not nearly as much as you could be."
-jnarowe

I dont know about that, see lower in the skimmer, the bubbles are formed and moved up from the surface by the sheer number of bubbles which are being created faster than the ones above can pop. But as they build up, they dry, and then the upward draft of air pushes that foam up through the neck. That upward draft doesnt care about restrictions...like hydrodynamics...the air will take the path of least resistance. The thing to watch out for is that the bubbles dont dry out too much before they are able to exit, caking the insides of the riser neck rather than the collection cup. This ratio of the surface area where the bubbles first 'wet-rise' to the air throughput of the skimmer in proportion to the height and diameter of the neck are very important.

Of the 3 ways I know of to force the skimmate into the cup, the downdrafting cover seems the best to me. The cover shouldnt be so low that....awww....here's a diagram...

Many mfgs make their lids like on the right, where the foam hits a solid flat lid as it rises. The way to do it is more like on the left, where the air makes a pocket in the top so that the foam doesnt actually go there and 'cake' as much...it gets drafted out around the neck.

I dont get how an angled neck is better than this...

 

[spazz]

hey bill here is some pics for ya. I think the conical bottom tube is what your looking for so you can build that one reactor you were talking about. the other is energys experimental ca reactor so far. it should hold about 20 lbs of media at a crack. but it will still need to be refilled every month to keep up to his demanding corals.
for the rest of you addicts wanting pics bill is busy cleaning the 7 gallons of puke out of the skimmer cup. he told me he is feeding 425 cubic feet of super fine bubbles to the skimmer right now. his rk2 ran around 150 -300 cubic feet of air to it. the riser will be swapped out for an 8" diam riser to raise the water height in the skimmer. its too low right now. the rk2 is off the system and it being moved out of the way so this master piece of modern technology can be placed in its final resting place. that's why he is not posting pics.

 

[Bill Wann]

you really should hide the vasilne jar , thats kinda personal . What happens in Scotts shops shpuld stay in Scotts shop

 

[hahnmeister]

Scott, are you going for a fluidized setup like the Deltecs? They use the same bottom cone. I cant figure out a way to make one though without having the pump coming through the lid (like the deltecs) because otherwise when the pumps turns off, the media can backflow into the pump.

 

[spazz]

hey my parts are so tight they need a little lube to get them where there supose to be.

 

[spazz]

<a href=showthread.php?s=&postid=7218705#post7218705 target=_blank>Originally posted</a> by hahnmeister
Scott, are you going for a fluidized setup like the Deltecs? They use the same bottom cone. I cant figure out a way to make one though without having the pump coming through the lid (like the deltecs) because otherwise when the pumps turns off, the media can backflow into the pump.

no its not a ca reactor that the conical bottom tube is for. its for a reactro that bill designed.

 

[dgasmd]

<a href=showthread.php?s=&postid=7218685#post7218685 target=_blank>Originally posted</a> by Bill Wann
you really should hide the vasilne jar , thats kinda personal . What happens in Scotts shops shpuld stay in Scotts shop

That was just too good :lol: :lol: :lol: :lol: :lol:

 

[jnarowe]

Nice workmanship Scott. I really like the "spade" shape too!

 

[Adam]

Spazz and Bill,

Great work on the these projects! You have my jones kicking for a CNC router!

Anyway, I have a question about the reactor design... Are you concerned about positioning that Iwaki that way? If there is a leak or spill, water could run into the motor housing or the rear cover which either holds a fan or the capacitor. Also, if this is a fan cooled motor, you will be blocking air flow from the fan.

Adam

 

[trodder]

<a href=showthread.php?s=&postid=7219524#post7219524 target=_blank>Originally posted</a> by Adam


Anyway, I have a question about the reactor design... Are you concerned about positioning that Iwaki that way? If there is a leak or spill, water could run into the motor housing or the rear cover which either holds a fan or the capacitor. Also, if this is a fan cooled motor, you will be blocking air flow from the fan.

Adam

hmmm... he has a point Scott... any thoughts?

 

[jnarowe]

It looks to me like it is just sitting there for the purpose of taking a picture and that when mounted it will be suspended above the base plate.

 

[humboldt reefer]

Nice projects guys. I gotta get off my *** and start puttiing the cincinnatti to work.
Hey spazz after you've formed the cone how are you holding it to machine the top and bottom? I cant think of a way to hold it that would be rigid enough to keep it from chattering like crazy.

 

[spazz]

<a href=showthread.php?s=&postid=7220303#post7220303 target=_blank>Originally posted</a> by humboldt reefer
Nice projects guys. I gotta get off my *** and start puttiing the cincinnatti to work.
Hey spazz after you've formed the cone how are you holding it to machine the top and bottom? I cant think of a way to hold it that would be rigid enough to keep it from chattering like crazy.

ahhh ancent chinnese secret. ha ha ha ha














i have a hand mill tabel i cut the cone on. you just have to go slow so it dont chatter. and it you wanted to just pour 2 lbs of dry sand in the cone bottom to dampen the vibration.

 

[spazz]

<a href=showthread.php?s=&postid=7219524#post7219524 target=_blank>Originally posted</a> by Adam
Spazz and Bill,

Great work on the these projects! You have my jones kicking for a CNC router!

Anyway, I have a question about the reactor design... Are you concerned about positioning that Iwaki that way? If there is a leak or spill, water could run into the motor housing or the rear cover which either holds a fan or the capacitor. Also, if this is a fan cooled motor, you will be blocking air flow from the fan.

Adam

the pump will mount to a plate in that position but will sit up off the base plate. those pumps are for the most part sealed. i will think about that when im doing the final assembley of it. anyways we are getting offtrack from bills monster skimmer.

 

[AcroSteve]

<a href=showthread.php?s=&postid=7221046#post7221046 target=_blank>Originally posted</a> by spazz
anyways we are getting offtrack from bills monster skimmer.

But... you started the thread. :lol: