Any Info on the Bubblemaster 300 yet?

[hahnmeister]

All I know is that it will have 3 of those pumps... but otherwise, what are some dimensions on this thing? Will it be just a larger version of the 250... 12" diameter and 24" tall?

I ask because I have to stick with external, so a recirc is in order for me.

[sjm817]

If I had to guess body size...

BM200 = 200mm
BM250 = 250mm
BM300 = 300mm

[hahnmeister]

Oh, yeah... duh. I should have remembered that... okay... so its 12" diameter. But what about height? Can I get one with a wetneck? Lol...

[Oliver P.]

<a href=showthread.php?s=&postid=9476426#post9476426 target=_blank>Originally posted</a> by hahnmeister
Oh, yeah... duh. I should have remembered that... okay... so its 12" diameter. But what about height? Can I get one with a wetneck? Lol...

I am not sure what you mean with a "wet neck" but at the moment we are testing some nano sealings with "lotus effect".
This nanotechnologie could be a better (and less expensiv)option in the future. In some weeks we know more...

The High of the BM will be 25.

[Creetin]

Oliver a wet neck is from spraying water down the skimmer neck to keep it from building up waste around it so the bubbles have an easier time Getting to the cup.
Does this work?? I have not seen any evedence that it does. I could be wrong But it certainly looks like a gimmick like winshild wipers on headlights of a car. :)

[hahnmeister]

http://i90.photobucket.com/albums/k278/wetworx101/Awetneckpeg.jpg

[hahnmeister]

You can see one in the collection cup of this skimmer...
http://reefcentral.com/gallery/data/500/4686mini-IMG_6689.JPG

as well as this one...
http://reefcentral.com/gallery/data/500/21211skimmer3.jpg

[Oliver P.]

@Hahnmeister

thanks for your explanation. When i saw your picture I knew immediately what you mean. I just never heard the name "wetneck".

I agree that a wetneck is interesting for larger skimmers, but I am not sure if this is really a efficieny booster.
Of course a clean neck is always an advantage. But the water that falls inside the neck has contact with the "Proteinfoam" and can dissolve a part of it again.

Hm, we will make some test with a wetneck on our new BM 300.

1. One week with a wetneck.
2. One week without a wetneck and without to clean it
3. One week without a wetneck but we will clean it as
recommended after 2-3 days.

After this test we know exactly the differences and all advantages and (may be) disadvantages.

Thanks,
Oliver

[hahnmeister]

From what I have seen/heard, the wetneck does boost efficiency. I agree that it seems counter-intuitive, but those who use them say that their foam rises in the neck that much faster. I would think that it would counter the foam as its in its drying phase on its way to the collection cup... but it seems to be the other way around.

[cweder]

Can we get a discount if we pre-order a BM300?

[cweder]

Since your still experimenting the the BM300 design. Could you please experiment with an adjustable riser tube vs the gate valve to control skimmer bubble height. I have used both and find the riser tube much easier to control for in sump skimmers. Pretty much set it and forget it, which is what we all want.

[skimmy]

trust me, the gate valve will be waaay better than a adjustable durso standpipe.

[hahnmeister]

Actually, no. I also find the standpipe a much more reliable method. In the event that the pump's intake changes (as happens with needlewheels) in air and water intake, the water level tends to flux a bit. Also, for those whose water level in the sump doesnt remain constant, the gate valve can be a challenge.

If something gets stuck in a pump, for instance, and its water intake drops by 100gph... with a gate valve, the water level in the skimmer will drop. With a standpipe, the water level will remain the same. Bottom line: gate valves rely on a constant pressure and flow rate... standpipes do not. Thats why most needlewheels tend to be standpipe designs, because throughout the day, the amount of water and air that a needlewheel takes in will change as the water chemistry changes. With becketts and venturi skimmers, this isnt so much a problem because the pump's used only pump water, so changes in the water chemistry wont change the flow rate. But we all know that dosing, adding food, etc... or even the light cycle, can make needlewheel skimmers go crazy at certain points and have their flow rates change.

[Creetin]

I beg to differ on the becketts, Water height in the sump mattered alot to stay constant.

[hahnmeister]

thats true, but alot of becketts arent as/even submerged in the first place (many are run above the water line where it doesnt matter). needlewheels MUST be partly submerged or the pumps wont work.

[Creetin]

Mine wasn't submerged, The waterlevel had to be constant or i would have to tune it everytime it changed. The force of the water going to the pump was greater when the level raised.
The opposite when the level dropped.
I have never had issues with gatevalve mods, I never had problems with stand pipes either, The olny thing i don't care about stand pipes is the splashing and the foam pads.
There's downfalls to each design i guess, I like the wat the ATI's are submerged now. I like the fine tuning a gate valve can give.

[xinumaster]

is there a price set already for this skimmer model?

[durango_doug]

I always prefer to use both a gatevalve and a standpipe to control the water level... you get the consistency and the fine tuning. You still get the splashing though, but that's easy to fix.

I would really like to see this sort of design in the bm300. I imagine it would be very easy to incorporate. Not a lot of design and testing involved.