Yet another Stream question

[Mark]

Hi Roger,


I'm setting up a 5'l x 2'w x 27"h tank with a central overflow. I'm planning to set it up Euro-style. What I mean by Euro is that I don't intend to move a ton of water with the sump pump. I'm looking at 5-6x turnover through the sump for water processing, and relying on a stream and/or tunze powerheads for current in the tank. I find it to be more energy efficient and more quiet. For this dimmension tank, which stream would you recommend? I was looking at the speed controllable 3000gph model. But I'm not sure if that would be overkill. I guess I could always turn it down, but I heard that affects the noise it makes. Is that true? TIA.

 

[Mark]

^

 

[rvitko]

I swear I replied Mark. The server must have fritzed out. As they taught me in Germany Mein computer ist kaput! or Der server nicht funktionieren! Ideally you would use 2 pumps. 2 6000 or 6100 Streams would be my choice and a multicontroller. The 6000 would be what I would choose if the rock work was light and the coral population was more diverse and included some LPS. The 6100 would be choice with dense rock work and lots of SPS. The pumps can get louder in the lowest settings- a slight clickity, click like a card stuck in the bike spokes. This is do to manufacturing tolerances and individual differences that make a particular pump run too slow- i.e. 30% power is really 20% power. We also have been working on making the pumps run slower and slower as time has gone on so the current production units are capable of 25% power and so the Single controller of today may create more noise on an older pump that has a slight incompatibility with this lowest possible speed. The remedy is simple- turn it up slightly. The pumps are continually in evolution as we are always working on new ideas and try to make as many parts interchangeable amongst products as possible some new products we have in the works will require an ultra low speed and so this is just part of that evolution but it does affect backwards compatibility to some extent. We also recently switched from nylon brake system to a teflon brake system and we are still gathering data from this change on noise and longevity of life but so far it seems to be an improvement. This brake/centrifugal clutch system is what causes the low speed noise.

 

[Mark]

Thank Roger,

I happen to find a 6000 for sale used that was only used for two weeks. I snatched it up with the intent of purchasing a 6010 down the road, and running both in pulse mode. The tank will have a low profile open rockwork, so it sounds like I made the right choice based on your advise.

I do have another question though. can a singlecontroller(7091) run a 6000 and 6100 with a branch adapter? Can the multicontroller do it? I'm wondering if it's possible to have a 6100 and 6000 running in the same tank with some type of unified control, in case I decide that I want a little more flow.

Have a great fishing trip!

 

[rvitko]

Yes, you can also run a 7400 or 7300 or 7200 or a 2002, 4002.