noise of water outlet in BK

[7thheaven]

Hi all~

long time no see... :blue:

I am so busy I can not visit zeovit forum..sorry for that...

My new tank is not made yet, so I installed BK250internal in my bathtub..

very interesting

But I found the noise of water outlet is very loud so I thought it needs some

solution about this...just soaking outlet pvc under water level fully?

so I wanna hear my zeovit bk user's solution and experience... :roll:

Thanks in advance~!

[nbd13]

Well you cant submerge the outlet because it creates back pressure.

so i just angle mine for now.

there is someone on here his name is John Brancheau he is local to me and when he was over last time he said you could drill a hole in the outlet tube and submerge it all the way. i guess the hole eliminates the back pressure.

i havent had time to try it yet. maybe PM him and see what he says.....

Nick

[7thheaven]

Thanks Nick...

How about adding TEE plumb in outlet for submerging instread of drilling hole?

[keigo]

hmm drilling hole to it... that is something never though of.. hehehe...

so vince how is the bath with the bk.. your bath tub water getting cleaner every minute you bath...

[7thheaven]

hmm drilling hole to it... that is something never though of.. hehehe...

so vince how is the bath with the bk.. your bath tub water getting cleaner every minute you bath...

Thanks...very good idea..I did not thought that idea...

[moonpod]

Mine really isn't very noisy. 400 externall. The outlets go into bulkheads that just pour into the sump. I guess I could add some plumbing and decrease the splash noise, but really it's no big deal.

[7thheaven]

I have 250 in sump model. can I have a TEE that fits outlet in germany?

I think the US PVC plumbing size would not fit...I wanna a TEE plumbing for reducing

noise...

[Orion76]

I don't find the backpressure decreases skimming performance very much, if at all. I'd say it's a 1% decrease in performance at the most

I would just submerge the outlet pipes if the noise or salt creep bothers you.

[GTR]

Submerging the outlet pipe(s) might cause a siphon in the main body of the skimmer which may make it difficult to maintain a consistent foam head height and with that reduced performance. A slight increase in water level could also cause an overflow into the collection cup.

SteveU

[7thheaven]

Well you cant submerge the outlet because it creates back pressure.

so i just angle mine for now.

there is someone on here his name is John Brancheau he is local to me and when he was over last time he said you could drill a hole in the outlet tube and submerge it all the way. i guess the hole eliminates the back pressure.

i havent had time to try it yet. maybe PM him and see what he says.....

Nick

Dear Nick..

Do you know where the hole is? Is just one hole or needed more?

TIA

I am not sure what is exact answer of noise problem..

[Travis]

IIRC, he drilled a hole that was about 1/4" around and it was positoned about half way up the drain pipe.

[CAReefer]

I had the same issue with my 300 internal. I drilled a 1/2" hole about 2" above the waterline of the sump. Then submerged the end and it is dead silent, and no backpressure.

Marshal

[7thheaven]

Dear Marshal..
That means I can drill the hole the straght Pipe of water outlet and you recommand 2 inch (about 5cm) above the waterline of sump...

Is it correct?

[CAReefer]

Yes that is exactly it. Distance above the waterline isn't critical. As long as the hole is above the waterline when the end is submerged. Size isn't critcal either, just enough to let out any air pressure associated with the draining of the skimmer.

[Orion76]

IMO this air hole or adding a tee isn't necessary, it is already built in to the skimmer as the standpipe where the water exits is open on top. The water exit valve only reduces the amount of water that can exit (i.o.w. increases backpressure) while the air exit above it always remains fully opened, it's an ingenius design and the guys at RE took care of all these problems for us already.

If backpressure is bad then why would we use a valve to increase it?

The only time I see this as being a problem is if you sump water level varies, which would make the back pressure vary and result in an inconsistent foam height.