which tunze stream for a 5.5' tank?

[crvz]

I am planning a new tank, and I need some help with choosing what to use for flow. The tank is custom built at 66" long by 24" high and wide. I'm using a mag 18 return and expect to get about 800-900 gph from the center return lines. I currently use some modified maxijets in my 58 gallon, which work well for the $20 bucks they cost, but i'm tired of always fiddling with them (they tend to rattle or spin the wrong way or otherwise give me trouble). I am considering replacing them with Tunze streams, though I'm unsure of what's the best solution. I don't have a sand bed and I keep a good amount of hard corals, so I like and am able to have a lot of flow in the tank.

I like the idea of 2x 6000 model streams, but I am not convinced I'll need to use a controller with them. So, unless I can be convinced, I will likely purchase 2x 6080s. I would like to put one each in the back corners about a third way down the glass, angled towards the front center. I would then have my return lines point towards the front corner from the back center of the tank.

Would this be too much flow for a 5'+ tank? I have no experience with this hardware, so i'd hate to buy something and then be disappointed (with either too much or too little performance). Any comments welcome.

 

[Andrew]

Two 6080s would be fine. I use a 6060 on my 75 and would like to add another one but I'm saving up for two 6000s and a controller. In a reef tank, being able to controll the pumps if a major plus. I would invest in two 6100s or 6000s and a single/muilticontroller. The non-controllable streams are meant for fowlr and cichlid tanks.

 

[rvitko]

The 6000 would be suggestion because you can adjust the flow and even upgrade the pumps to 6100's so too much or too little becomes all but impossible. I would also add that the controller pulses and alternates pumps and this providesd randomness that prevents the accumulation of detritus in areas. The 6080's would likely be enough but they cannot be used on any sort of wavemaking device, the most control you can have with them is shutting them off once an hour, no more than 24 times a day.