Battling hair algae


Active Member
View Badges
Jun 12, 2020
Reaction score
I’ve been battling hair algae for a bit now. I manually remove during water changes and use a toothbrush afterwards. Tank looks like a million bucks until I get back from work after a 2 week hitch. It will look like this. B39EA27C-05DB-48C9-B247-115204B76910.jpeg
It will pull off like a carpet on the substrate, my snails look like they’re in a hair band and rocks have beards.

I’ve been struggling with low pH since day 1. Tank has been running for little over a year now. Now I have a Icecap CO2 scrubber and so far has been raising it up slowly. Tank is a AIO IM30 Long, I am running some activated carbon bags and one small bag of GFO from the IM Purity midsize kit. As for export, i have a IM DC midsize skimmer, filter floss in the media basket, ceramic media, and the media cubes from algae barn. I will use a filter sock from time to time but I just made a diy algae scrubber and us the IM chaeto max light. 8497DF5B-C947-4B07-B2D4-3AAF08262598.jpeg
I tested for NO3 and PO4 today to see what my levels are. And here are the results. EE2E6F8D-2A9F-4EA0-AB15-E235BE049889.jpeg 1F89F453-27B9-4992-87EC-14AF4834853F.jpeg
0 nitrates and .03 phos. I have been feeding every other day, and just enough for the fish to consume in about a min or 2. Stock right now is 1 clown, 1 bengai cardinal, 1 scooter blenny, 1 cleaner shrimp, 3 blue legged hermits, 1 emerald crab, 8 astrea snails and 1 turbo snail. Parameters
dont mind the dip, I swapped out reagents. Numbers have been pretty consistent. I run the Saxby light schedule for a photo period of I think 10hrs with 1hr ramp times. I know hair algae is sucking up the nitrates as it’s just like a pothos vine we use in fresh water tanks to combat nitrates. I need help with getting rid of the hair algae so no3 and po4 and get back to normal.
Orphek OR3 reef aquarium LED lighting


New Member
View Badges
Aug 16, 2019
Reaction score

Reduce your light schedule... intensity and or duration and keep up the maintenance. Should start to turn a corner soon enough.


  • LOVE them

    Votes: 356 44.6%
  • Like them

    Votes: 217 27.2%
  • They're "ok"

    Votes: 149 18.7%
  • Don't like them

    Votes: 43 5.4%
  • Hate them

    Votes: 24 3.0%
  • Other (please explain)

    Votes: 9 1.1%