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#101
12/01/2007, 04:22 AM
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They diffuse turbulence... like a spraybar. You can get similar effects through other methods, like simply adding more height, but this would put more back-pressure on the air intake of the pump. Or, you could use multiple smaller pumps rather than one large one, as most large pumps w/o a diffuser would turn a shorter skimmer into a whirlpool. The bubble plate allows one large pump to be used on a skimmer body that would be shorter, and sometimes narrower than usual by cutting down the turbulence. By cutting down the height, another benefit is less back-pressure on the air intake of the pump, so you get more air for less wattage, etc... its a win-win all around.
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"If at first, the idea is not absurd, then there is no hope for it" -Al Einstein |
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#102
12/01/2007, 03:44 PM
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I see. Thanks for the info. I am about to dive into my first DIY skimmer, and I am trying to not screw up more than about half of what I try
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#103
12/04/2007, 11:25 PM
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More pics! Very cool project. I'd love to check it out some time. I use a laser at my work but it's an older engraving style not the fun CNC kind
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- It's a World Wide Suicide - |
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#104
12/04/2007, 11:41 PM
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Hey Hahn, you definitely have a grasp of this stuff...
ReeferRyan stated: "What does a bubble plate do, and why are they necessary for high performance skimmers." SO one thing I am curious about: What about the difference between open bottom bubble chambers versus closed? It seems that landy went with a completely closed bubble chamber. Why not have some holes in the bottom? It seems that if some of the pressure from the pump was relieved by some vents low in the chamber, then that would reduce turbulence from escaping from the top with the bubbles. I would think you'd want the bubble free water to escape from the bottom and allow the bubbles to 'freely escape' from the top without being 'blown' through the top. I guess it's a balance thing and hard to adjust after the build? Stu
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Some people think that I have Attention Deficit Disorder. They just dont understand that........ Hey! Look a chicken! |
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#105
12/05/2007, 12:11 AM
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It's fairly easy to do with a semi-closed bubble chamber....You have a typical closed bottom bubble chamber, but you run a line out of the bottom going back to the recirc pumps intake, throw a gate valve on that line for adjustments and voila! you have complete control of how much of the recirc's output is being "blasted" out through the top of the diffuser.
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Jeff |
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#107
12/06/2007, 08:46 PM
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Quote:
landy |
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#108
12/06/2007, 09:13 PM
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Landy, if you want to come by and check out how the Reeflo bubble plate is done let me know. I'm sure you've seen a lot of pictures but seeing it in person always helps.
Chet
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- It's a World Wide Suicide - |
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#109
12/07/2007, 12:14 AM
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Quote:
landy |
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#111
12/13/2007, 08:38 PM
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Quote:
I finally got the reducer heat formed, 2 jigs and 3 pieces of acrylic latter.  My lady is cutting it as we speak, when she gets home I will post a picture. That is pretty much the last piece of the puzzle. If I didn’t have to go out of town tomorrow and into the weekend, I might get it assembled. But what can you do, work pays the bills.  landy |
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#113
12/18/2007, 08:48 PM
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Sweet Landy! Just ran across this thread. PM returned
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#115
12/24/2007, 10:18 AM
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 About an hour after installation. I did a freshwater test for 1 hour. Then I ran with tank water outside for about 12 hours closed loop first. It holds about 15 gallons. I have been trying to tune it in. Its seem like it could use about 6 more inches of reaction chamber. It cant handle the dart wide open unless I drop the water level down past the reducing flange. I have pretty much left the air valve wide open. The body looks like milk compared to the beckett skimmer I have been running, but is more turbulent that I would like to see. I may have to change the bubble plate, or as hahn and others have suggested, vent the diffuser back to the dart with a gate valve. The diffuser chamber has a great circle motion to it, i will see if i cant take some video of it or something. landy |
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#117
12/24/2007, 05:34 PM
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my skimmer wouldnt tune for about 2 weeks, until it "broke in" it overflowed alot, or the head height would colapse with very little adjustment. Hopefully it will be more tunable in some time. It looks really good!
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#119
12/25/2007, 01:04 PM
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Quote:
8" by 1/4" for bubble diff landy |
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#120
12/27/2007, 01:05 PM
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i think it might be starting to get broken in.. if i would quit messing with it, i might start to get some real skimmate.
i still think the main body is a bit to turbulant, but i want to give it some time to see what happens.  landy Last edited by landy; 12/27/2007 at 01:40 PM. |
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#123
12/27/2007, 01:58 PM
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Do you think the bubble diffuser is big enough? How about some pictures of the main body and at the neck. What about a little video of it in action? Very cool either way.
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- It's a World Wide Suicide - |
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#124
12/27/2007, 03:51 PM
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love diy skimmers....this one is very cool....
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#125
12/27/2007, 07:20 PM
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Yeah it does look like it needs a little more height. Awesome job on it, that thing looks very proffesional.
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