Update:
I changed the old return pump (aqua medic ocean runner 3500 l/h) and the Tunze Turbelle 4000 l/h to a Red Dragon 10.000 l/h return pump.
Here's the RD:
http://www.tanu.nl/tmp/reddragon.jpg[/IMG]
I also changed the previous (diy'ed by a local store) to a Schuran skimmer. To be honest, I'm not very impressed by this skimmer. I've ordered a Bubble King
The lfs doesn't have this one on stock, but I think it'll be there in a few weeks. I've seen some BK's working here in Holland, I'm very impressed with the ammount of waste being removed, the electricity consumption, the low-loise (almost silent!) level and with the looks and construction of that unit.
Something else i did was making a small change to the calcium reactor, so it now dissolves much more calcium! My Ca levels were a little low, this is solved
[IMG]