Setting up alternating current with Apex

[ThunderGoose]

I just got a new Apex system and I'd like to set up my Koralia pumps to alternate to create a back and forth current. Can anyone help me with the programming? Thanks.

 

[Big G]

Bump

 

[rkpetersen]

I'm not familiar with those pumps, but simply turning one on for awhile, then off while the other is on, should be doable with an OSC command.

For the first powerhead, you might have it programmed:
Fallback ON
OSC 000:00/005:00/005:00 Then ON

For the second one, it would be:
Fallback ON
OSC 005:00/005:00/000:00 Then ON

What this would do is turn the first pump on for 5 minutes, then stop it and turn the second one on for 5 minutes, and so on indefinitely.
This can be modified for longer or shorter durations, although the total minutes in each line should divide evenly into 1440, for it to restart smoothly at midnight every day.

 

[120reefkeeper]

I just got a new Apex system and I'd like to set up my Koralia pumps to alternate to create a back and forth current. Can anyone help me with the programming? Thanks.

I’m not sure you can do exactly what you want with those particular pumps. It can be done with other pumps. It’s a lengthy process that I can’t possibly type out here, but there is good news.

Here are a few videos that show you how you can do this, but with different pumps.

Video 1


Video 2