Question on the new 7020 Controller & Upgrading my 2 x 6255's.

[naterealbig]

Hi @rvitko & friends,

Had a couple questions:

1) Can I upgrade my old Tunze (Eco model) 6255 controller to the 7020? If so, so I need to purchase any additional parts besides the controller?

2) Can I customize the length of the feed cycle?

3) Can I customize pulse timing? What is the longest I can program it for?

**I'm running 2 x 6255's - one on each side of the overflow on a peninsula-style, 5 ft long tank. Currently I have each pump on a timer - one runs for 12 hours, then turns off and the other run runs for 12 hours. The challenge here is that without a 'grate' available for this model, a snail occasionally will crawl into the shroud, and prevent the pump from starting. Luckily I haven't damaged a pump or killed a fish yet, but it's only a matter of time.

4) Am I able to decrease the speed of the pump to lower than what is capable with the current controller? I ask, as I am running these on the lowest setting (20%). I'd like to have the 'non-pulsing' pump spinning (but much slower than the current minimum of 20%) - just fast enough so that it doesn't create substantial flow, but prevents animals from entering the shroud...

Thank you!

 

[rvitko Verified Sponsor]

1) Yes, part 7020.150, they are in stock in the US, order it on Tunze.com

2) Yes, and you can set how fast the pump runs off or slow speed.

3) I don't recall exactly but you can set a lot more than you can on what you have, you can set changes all day long, there are a lot of modes and they are generally though in the 0-10 second range for pulses, but you can set so many flow changes in a day that it doesn;t have many limits.

4) No, while you could, 20% is essentially the stall speed, below that the pump wont run and is essentially off. 0-100% is open, but only Stream 3 can do the very slow speeds.

 

[naterealbig]

Thank you Roger!