Skimmer Confusion

[Daniel411]

I'm currently getting ready to order a custom made 480g aquarium. For a variety of reasons I'm going with an internal filter/wet-dry. Space for a skimmer will be at a premium, however I'll increase the size in order to have proper filtration.

What is the difference between the Comline Automatic Skimmer and the Universal Automatic Skimmer line up? Particularly models TZ5117 and TZ5141. From the descriptions at marinedepot I don't understand the difference is.

According to marinedepot the TZ5117 model has base dimensions of 4.9x4.4x19. Is this a total dimension with pumps and everything? Is there a minimum or maximum water level that they need to be in?

Same questions regarding the model TZ5141 which lists dimensions of 11.0x6.1x12.2.

Thanks, Daniel

 

[rvitko]

I don't know those part numbers- can you give me Tunze model numbers. Those are catalogue numbers for Marine Depot. Based on the dimensions you give I am assuming you are talking about 240/3 vs 3140/3. The dimensions are total as the pumps are built in.

Basically Comline are preferred for in tank, they need about 11" of water to operate. Universal Automatic are preferred for in sump, they need 3.5" of water but can be raised on a platform to suit your needs. Both skimmers require a constant water level and a top off system or baffling needs to be used.

 

[Daniel411]

Thanks for the speedy response.

Yes those are the two models that I was looking at and comparing. Although, the 3140/3 was listed on marinedepot as a 3140/2. Is there a difference?

What do you mean by top-off system or baffling?

 

[rvitko]

That was a typing error, 3140/2 is the current model.

You must be sure by one method or another that the water level around the skimmer will be constant, otherwise you will not be pleased with the performance. In miniaturizing a skimmer it becomes very sensitive to changes in water level, The universal model for instance has 5ft of reaction time by employing a centrifuge with a baffle system. That miniaturization makes a big change from very little change, a 1" drop in level will affect skimming. If you use it in conjunction with an Osmolator or install a set of baffles that keep a constant water level (partition in the sump that dams the water to the correct level) it will work well. They also don't like alot of turbulence so a really churning sump is also a problem.

 

[themadreefer]

you can not go wrong with the 240/3 for in sump installation,
awesome skimmer.
as far as turbulance goes, my sump is pretty darn choppy, and skimmer seems to be working very effecientely.