Ok but i will have to reduce since the becket only fits 3/4". Is this correct?

Well, just to come at this from a different angle IMO the down tube is too large - I'm pretty sure i saw somewhere it is 2.5"

I have a chart somewhere (can't place it at the moment) but the rule of thumb from my diving days is that the *smallest* visible bubbles rise at about 1 foot per second. So if you look at a flow vs velocity chart on 2.5" pipe you need about 18gpm for a 1FPS velocity (round it out to 20gpm for a nice number) Thats 20gpm just to keep the *smallest* bubbles static in a column of water. So realistically you're going to need 30-40gpm to blow everything down and through - which you're not going to get through a 3/4" injector..... So you'd need multiple injectors..... And bigger piping...

I think I saw the skimmer was 5' tall. So if you add that head to the head loss across the injectors and friction loss, I'd guess you're around 15' of head (or probably more). That's a pretty skookum (read inefficient & noisy or expensive) pump.

2" @ 1FPS = 12gpm
1.5" @ 1FPS = 8gpm

Anyways, just my thoughts to chew on for what they are worth.

Jim

you forgot about this part, like I suggested in the earlier thread and this one go to a 1" tube for your Becket, this will increase the water velocity and help push them bubbles out.

Steve

Ok well after i test this design, maybe ill try makeing the down pipe smaller but not sure how i will go about this.

how is your 2.5" pipe atached to the box?

Steve

Its been attached with the chemical stuff the bonds the acrylic togeth so it will be a tough process to get it apart, but who well the testing has been moved till tommoroow ill let everyone know how it went.!!!

Fun stuff, huh Sean?!? :biggrin:

woo-hoo, havin fun NOW... :mrgreen:

well a couple ways to do it, you could use a dremmel and cut it flush with the box. then get a 1.5" bulkhead and put that in the hole (as it is almost the right size) and use a 1.5" male to 1" female bushing in it to alow for you to rig it up using a 1" pipe.

Steve

Yeah stircrazy thats what i was thinking but i dont have a dremal, maybe someone will lend me one :biggrin:

PS oh im havin loads of fun now :evil:

Ok well ive tested out the skimmer without the 90 degree bends and im getting less bubbles then before in the reaaction chamber, so now im open to options that will allow me to use what i got without to much modification. Im open to a different type of skimmer and everything. maybe a venturi?