Cold temperate tank system in Sweden

I thought: Should I empty the skimmer cup? Na, no one will notice it...
Well, I usually don't run it that full, this is probably 2 weeks of skimmate. I like to skim wet, otherwise all dirt will get stuck in the neck.
I really love your old skimmer! You should test it. In the last century I built my own four feet PVC-skimmer and it work well. But it is hard to place in a modern setup.

The sulphur reactor is a nitrate reducing unit. It converts nitrate to nitrogen. The flow through the reactor is very low. In the start it is only two or three drops per second.

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Nice story about your salt water supply!
A senior high school nearby has a "waste" pipeline from their aquariums. They collect the water from the deep bottom of the ocean (. The surface water here have a salinity of 27-29 ppt, but bottom water are 32-35 ppt. So I usually take water from the pipe, but half the times I mix RODI-water and salt.
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Really cool way to collect water - no pun intended!:D I'm originally from New York City (Queens) and I miss the snow terribly. Time for a trip overseas.
 
PS with regard to that old protein skimmer above, I just found the collection cup. I then marked the raised letters with carbon paper to make it easier to read The top says "Made in Germany" bottom reads "Protein skimmer" followed by the manufacturer "Sander" then "Ozonreaktor". Interesting. Have you heard of the Sander company?
They say that the Germans were ahead by leaps and bonds in this hobby. Seeing this slimmer was made in the 80's speaks volumes - ozone was condoned. I wonder if way back then marine biologists were involved in development of our equipment?

I'm definitely going to use this skimmer on my QT and rearing tanks. I just bought new wood air bubblers. To memory, it really worked well. There are notches top and bottom for suction cups. Just a pair of them and a good clean up and good to go.

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Not much is happening right now in the tanks, but here are a couple of Pictures from the large tank (540 litres)

Close up of a starfish, Asterias rubens.

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A great spider crab cover themselfs with algaes and sponges.
Most of the algae have not grown naturally on the crab, but the crab picks an algae plant or sponge and attaches it to the body.
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The other day, the whole family were out fishing. The daughter, 5 years old, thinks it is very exciting.

We both sat on a floating bridge with our noses deep in the cold water ,trying to find something. A lumpfish fluttered past and I had no hoop net.
Jumped up and fetched it, but it was to late. A bit disappointed I let the daughter take over the hoop net and after a little while she shouted. She had caught the lumpfish and was mighty proud!!

It is 3/4" (20mm) and is living in the 50 liter mud tank. There is about one million copepods in that tank and hopefully the juvenile lumpfish will eat them all.

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It's body is almost like a box and it can suck on to the surface.

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Very nice, natural looking forms of life and system !!!
 
I have wanted a temperate reef for a while, but I'm broke! ;Meh Its fine tho, gotta figure out what to do with my arrow crab first...:confused:
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%

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