Tunze 9002 water level

[mark dold]

Could someone please help me with the measurement of the water level mark on a Tunze 9002? I bought mine secondhand and the mark has been completely removed. Mine is the older version.

Need to know the measurement from the top (or bottom) of the skimmer body to the water line mark.

Thanks,

 

[saltygeek]

Its just about an inch from the top of the skimmer body.

 

[rvitko]

7-8.6" must be submerged, the ideal is 8-8.5"

 

[mark dold]

Great, thanks for the response.

 

[nowlan]

Hello,
Ive been reading up on this too.

I have current model.
Would the water level be 2cm below top of skimmer body, or below wavy water-mark?

I used to have mine about 0.5cm below wavy mark.

Reason I ask, Im trying to pull some oil from water surface.
There is a hole at the back of unit, above the magnet.
Is this the intake for the skimmer?
There is a matching hole at the bottom, which I thought was Exit.

Originally was trying to line up the top hole with water level.

Really confused at the moment.

Please advise,

Anthony.

 

[rvitko]

Your water level is fine, regard the wavy line as the maximum water level and up to 2.5cm below is acceptable. The ideal is around 1cm below.

The skimmer will not remove the oily film, you need stronger surface movement to mix this film back into the water column and then the skimmer can remove it. Such a film is generally a good indicator of insufficient surface turbulance above all else.

The skimmer has no real intake or outlet, the hole is where water exits to seal the cup, the water exiting that hole is essentially the gasket for the cup.

The slots at the bottom are the diffusion gradient where waste enters osmotically and is removed by the skimmer.

 

[Essense]

Your water level is fine, regard the wavy line as the maximum water level and up to 2.5cm below is acceptable. The ideal is around 1cm below.

The skimmer will not remove the oily film, you need stronger surface movement to mix this film back into the water column and then the skimmer can remove it. Such a film is generally a good indicator of insufficient surface turbulance above all else.

The skimmer has no real intake or outlet, the hole is where water exits to seal the cup, the water exiting that hole is essentially the gasket for the cup.

The slots at the bottom are the diffusion gradient where waste enters osmotically and is removed by the skimmer.

I'm confused with this. I too have lost my water level line marker on my Tunze 9002.

The dimensions of the unit are:
2 1/8" x 4 1/4" x 8 3/4"

That means the water level line, for those that haven't had it removed, is roughly 7 3/4" from the bottom of the unit. If this line should be regarded as the maximum water level line, how can an ideal submerged state be between 8"- 8 1/2"?

 

[rvitko]

A 9002 will work when 7-8.6" are submerged.

 

[Essense]

I see. I've been running mine for roughly 4 weeks and am still getting it dialed in. I wasn't seeing good results with a submerged state greater than 8".

 

[rvitko]

What seems to happen at greater than 8" submersion?

 

[Michelle S]

I have the tunze 9002 skimmer but haven't used it yet. I have a 28 gal jbj nano led, it's about 6 months old. The cup of the skimmer just sits on top and kind of wobbles. Is there supposed to be a gasket or something to 'seal' the cup to the skimmer? I called Tunze and they said no but wanted to check here.

Also I have a modified skimmer cup from InTank that will fit in the back compartment of my JBJ where the filter basket is now.

 

[rvitko]

There is no gasket, while technically there is, water forms a seal in our skimmers, there is no physical oring or gasket disk. The cup just sits there.

 

[Mindflux]

I find if I get just a smidge above the "max" mark my cup starts to float and it doesn't skim well. This is proving problematic for me because the only place for the 9002 is in the second chamber and adjustment is limited due to the mounting magnets on the tunze... not a flaw of the 9002 per se, but just a flaw in using them in all-in-ones like the 34g Solana.

 

[Mark SF]

I find if I get just a smidge above the "max" mark my cup starts to float and it doesn't skim well. This is proving problematic for me because the only place for the 9002 is in the second chamber and adjustment is limited due to the mounting magnets on the tunze... not a flaw of the 9002 per se, but just a flaw in using them in all-in-ones like the 34g Solana.

You could try the "In Tank" collection up option. It basically has the same footprint of the skimmer, so if your skimmer fits, this collection cup will fit as well. It is allowing me to squeeze in tight areas where the cylindrical design of the Tunze collection cup will not.

The only downside to this cup is that it is much heavy thick walled acrylic that can weigh down on the skimmer and its magnets.

-Mark

 

[rvitko]

The other issue with a higher water level is that water tends to be drawn in to the air intake and reduces the performance, the main benefit of the InTank cup will be more clearance to raise the skimmer.