Wow this q takes me back!
The very first tank I set up was a 10g. I didn't know anything about RO/DI and was using tap water with an additive.
Hair algae galore. I had a inch think carpet on every surface of the tank. I learned about RO/DI and water changes. Did that and stopped overfeeding. Seemingly no changes. After a couple months of better husbandry I scraped it off the glass, scrubbed off the rocks, vacuumed off the sandbed AND it never grew back as I got rid of the food source. I also added a size appropriate cuc.
Fix the source problem and you will fix GHA. Time and patience, no additives needed.
The very first tank I set up was a 10g. I didn't know anything about RO/DI and was using tap water with an additive.
Hair algae galore. I had a inch think carpet on every surface of the tank. I learned about RO/DI and water changes. Did that and stopped overfeeding. Seemingly no changes. After a couple months of better husbandry I scraped it off the glass, scrubbed off the rocks, vacuumed off the sandbed AND it never grew back as I got rid of the food source. I also added a size appropriate cuc.
Fix the source problem and you will fix GHA. Time and patience, no additives needed.