A painful month of green hair algae

It’s been a painful few weeks for my largest tank. We got overrun by hair algae — the kind that looks like a bad wig decided to take up residence on every plant and bit of hardscape. You know the one. It’s bloomin’ difficult to shift, and honestly we were at a loss.

First we went in with manual removal. Chopsticks. Yes, chopsticks. I spent what felt like hours twirling the stuff off like spaghetti, only for it to reappear in what might as well have been a week. Then we tried scrubbing with finger and thumb. Therapeutic? Maybe. Effective? Not so much. We even cut back the plants to give ourselves a fighting chance — and within a week the algae was back, waving at us like an old friend who never got the hint to leave. (The only thing green and growing that fast in my life is usually my envy of people with algae-free tanks.)

So we changed tack. We added shrimp — little grazers that actually seem to enjoy the stuff. We removed some of the plants that were getting hit hardest, which felt wrong but gave the tank a bit of breathing room. We added an algae solution (the kind you dose, not the kind you drink — although some days I was tempted). And we cut the lighting time. That last one felt like admitting defeat: “We’re not worthy of eight hours of light.” But sometimes the tank tells you what it needs.

We’re back on track now. Not out of the woods yet — I’m not throwing a party and declaring victory — but the hair is receding and the tank looks like ours again. Fingers crossed it stays that way. If you’re in the same boat, check out our algae guide for the full lowdown on the good, the bad, and the ugly.

Here’s the kicker, though. The whole time this was going on, our water quality was absolutely perfect. Ammonia zero. Nitrite zero. Nitrate where it should be. We were logging everything (yep, in App-aquatic) and the numbers never put a foot wrong. So the algae wasn’t a “your tank is dirty” lecture — it was a light-and-nutrients-and-balance lecture. Sometimes the tank is just having a moment, and the parameters are sitting there innocently like, “Don’t look at us.” So if you’re battling hair algae and your tests look fine, you’re not going mad. You’re just in the club. Welcome. We have chopsticks.