Best settings for a 7094 multicontroller on a 240g?

[boobookitty]

Hi...

I have a 240g tank (96x24x24), which has a closed loop with spray bars on the back, 4 sea swirls (3/4") on the front top of the tank fed by 2 Mag 24's, and then two Tunze 6100's (inside Tunze rocks) on opposite ends at the front bottom of the tank facing each other on a multicontroller 7094 (yes, I like a lot of flow ). The sea swirls add a lot of chaotic flow on the top, which is good given the number of SPS I have, the spray bars help keep water circulating behind the rocks, and the Tunzes add flow along the front bottom of the tank (until a few weeks ago they were actually angled up, but I've adjusted them so they are mostly straight across the bottom).

Until now, I have had the Tunzes set up in pulse mode, I think...the setting where one is on at 30% and the other in 100%, then they switch. The interval is approximately 10 seconds. I'm wondering now if a different setting would be better, either a longer interval (allowing a current to be set up for a few minutes before it switches), or mayber even tide mode? Will a single 6100 on one end of an 8 foot tank be able to push water to the other end effectively? Any recommendations? The tank is SPS-heavy (a few softies and LPS).

Thanks...

Arthur

 

[boobookitty]

Hmmm...nobody with a recommendation? In this group?

Arthur

 

[rvitko]

I will get to this tonight. I am on dial up and have to stick o the short answers to free up the phone.

 

[boobookitty]

Thanks, Roger. I await with great interest.

Arthur

 

[rvitko]

I would do this, I would use tide mode but with a very short interval- maybe 30 minutes. I would pulse them as you are doing but probably 50% to 100% every 3-4 seconds. I would aim them from the back rear corners to the front just shy of center, this will make a rolling current and should eliminate the need for the spray bar, I only suggest doing that because I live in TX and gripe about 10c a KWH so if I lived in LA I might go nuts paying that kinda money. Mag 24s use tons of power. As much as I splurge on my equipment and that goes for appliances and most things, I like the best, I am a real miser on electricity and water and gas and consider it a challenge to spend as little as possible.

 

[boobookitty]

Thanks, Roger...

So, in tide mode only one at a time is on for half an hour each, and you're suggesting pulsing it 50%-100% on a short interval? Is there an issue with a single unit pushing water across an 8 foot tank for 30 minutes (e.g. will the other side stagnate), or is it that it's OK to have lowered flow on one side for 30 minutes at a time? I'll likely leave them pushing straight across - moving them would be a big hassle.

Thanks again...

Arthur

P.S. I'm on LADWP so I pay 10 cents/kwh, and I still pay $350-$400/month for electricity, inclduing the tank. :eek1:

 

[rvitko]

Hehe, I have brought mine down to $150 but I probably will die from Radon gas now :lol:

I think a momentary reduction of flow is natural and would not be of any great significance. The pumps have a strong flow for 6ft and a light flow for the last 2 ft of that reach. I suppose it could be a problem if the intake gets fouled and reduces the flow more. It is easy to clean these though by simply covering the outlet with your hand when the pump is running, this backflushes the intake.