I'm having this issue right now. I have a Nero3 pump and a Hydra 32HD. I was advised to split them into separate tanks, which removed the issue. After a good while I moved them back and the issue was gone for a while but returned after a few weeks. I have mixed feelings regarding their support, the support agent himself has been helpful but not happy with the company overall, I don't want to speculate publicly but I'm a bit surprised reading that more people have had the same issue when looking at the experience with their support.
I'm going to start with replacing the light and then I'll see if I can find somewhere on the circuit-board where I can connect a debugger, might provide some information other can find usefull and I'll update if I find anything. Finding the root cause through the support is no longer possible for me as I've asked them to close my ticket.