Yeah, it's been a rocky road for sure. I bought everything anticipating going high tech, especially the lights - they've been very difficult to work with. I wish I could get the reg fixed, but at the same time, if I can hardly handle low tech I'm not sure I should even try high tech. I don't think the lighting is too high, considering my overall lack of any other kind of algae. I haven't touched them in a long time and nothing's really gotten worse. Just waging cyano battles now lol.
Overall I lost 3 harlequins and 1 cardinal. Not bad considering it ended up being columnaris after all and I did not treat with any meds (just salt and cold water). Sticker shock at replacing the harlequins though, wow. 7 of them and 3 otos was almost $40. I had the other harlequins for nearly 2 years though, and they survived a lot. Hardy little guys.