Tunze DOC Skimmers

[rvitko]

OK, here are my pics. Tank is a Tunze Biotope 120. The light is a dual 150 Tunze light with Giesemann Coral tubes. Equipment includes a 3170 Calcium Automat with Tunze regulator 7077/2 and 7074/2 CO2 Controller, Wavebox, 6000 Stream with 7095 controller and Stream Rock. Compact Kit 16 and Calcium Dispenser 5074. The tank is starboard bottomed, no water changes since it was set up about a year ago. Skimmer was cleaned yesterday at about 4:30pm.

For anyone interested camera is a Leica Digilux 2, Aperture set on auto, shutter speed at 125, manual focus and zoom. I am still learning to use it, this camera is obsolete but after reading reviews I bought a refurb off of eBay. Photos were resized in Photoshop CS for Mac.

 

[asmujica]

Roger that is a very interesting system. It has a recirculation pump TurbelleÃ"šÃ‚® 1200/2 (1,200 l/h, Hmax 3 m / 317 US gal./h, Hmax. 118 in.) return pump?

 

[rvitko]

Yes, it also includes an Osmolator, 3166 Filter with 1600/2 Turbelle, 9010 Skimmer and 3179 Biohydroreactor. I will try to get pics of the system with the 9020 tomorrow.

 

[asmujica]

Neat bioreactor, how does it work? Is it similar tu the sulfrur denitrators available today?

 

[asmujica]

<a href=showthread.php?s=&postid=7515266#post7515266 target=_blank>Originally posted</a> by rvitko
Yes, it also includes an Osmolator, 3166 Filter with 1600/2 Turbelle, 9010 Skimmer and 3179 Biohydroreactor. I will try to get pics of the system with the 9020 tomorrow.

Roger so the sump receives very little flow? Interesting

 

[rvitko]

No, it has a fill of clay slag and works because the water is fed through in a very slow trickle after being prefiltered by the 3166. The debris in the 3166 also serves as the carbon source. The bed of media is about 10" deep so after the first couple inches aerobic bacteria have consumed most of the oxygen and then the anaerobes can break down the nitrate in the deeper reaches. It works pretty well in most systems. Some systems don't have sufficient carbon to allow it to work as well as it should.

 

[rvitko]

The flow is about 3 time turnover which is honestly what I would recommend. At most I would want 5 time flow through, more just creates more bubbles and more noise and more evaporation in my opinion.

 

[asmujica]

<a href=showthread.php?s=&postid=7515360#post7515360 target=_blank>Originally posted</a> by rvitko
The flow is about 3 time turnover which is honestly what I would recommend. At most I would want 5 time flow through, more just creates more bubbles and more noise and more evaporation in my opinion.

Roger do you have a graph that shows how head pressure affects that pump? I also wanted low flow in the sump and am interested in comparing pumps. The tunze website does not have a chart on it.

 

[rvitko]

I could not find one but from my experience the flow curve is pretty flat, it has a max flow of 317gph and a max head of 120". In my install I am pumping up about 40" and getting about 300gph.

 

[asmujica]

Thanks Roger for the reply. If its only loosing 17gph at 40" I think its one of the most efficient pumps at that height.

 

[rvitko]

I can only approximate, at worst it is about 250, the pump has a unidirectional high pressure impeller and housing.

 

[kenneth31400]

foam extraction unit

foam extraction unit

The collection cup needs to be cleaned regularly for optimum
skimmer function. 4 to 5 days once in my case. Will a foam
extraction unit prolong the interval between cleanings? I
find that the skimmer looses efficiency when the riser stem
is coated with DOC and I presume the same happens to
the foam extraction unit so it will require the same frequency for
cleaning?

Kenneth31400

 

[DitchPlains2]

Roger

Roger

Hey maybe I should send my Tunze 9015 in to you, it's still working minus the screw, but working nonetheless, I have blasted it with air, and still cannot adjust the type of skimmate produced, luckily it's wet, the way I like it! Can you pm how to do this, and the turn around time, as I don;t have another skimmer to backup with.

thank you
David

 

[rvitko]

Of course the cleaner things are the better they skim but you still get some skimming even after sludge has built up on the riser or cup. I generally clean the cup or riser every couple weeks.

 

[Neal Flomenberg]

Set up a new 9010 and having trouble with microbubbles which doesn't seem to be a common complaint on this thread. The tank is new and has very little life in it. Skimmate is still pretty clear. I'm wondering whether when there is more to skim that the bubles will decline (ie trapped in the skimmate a bit more effectively. Anyone have experience with one of these skimmers in a new, very low bioload tank???

Thanks,
Neal

 

[rvitko]

New fresh salt mix will have a higher surface tension and retain more bubbles. Usually these mixes have some colloidal additives that are the cause of this. I have not had many bubble problems but it will depend alot on the oxygen content of the water and proximity to the pump and the surface tension of the water.

 

[Flatlander]

Rodger,
Does the bracket for hanging the skimmers in the tanks themselves, fit on a framed tank or do they require some type of frame thingy, like I now need for my stream pump bracket?
Thanks

 

[rvitko]

The long screws for framed tanks are included.

 

[Deacon]

bump...


I'm looking into buying a Tunze 9010 skimmer and am fishing for any input.

 

[h20cooled]

I have a 9005 on my 30G softy tank and I love it. But if I had to do it over again I would have bought the 9010, it was only a little more when you add the sump kit to the 9005 and it has a larger cup.

I had an Aqua C Remora before and I was never happy with it, the 9005 skimmed more if 4 weeks then the Aqua C did in 2 yrs.

Rich