I think they say the best thing to do with the glass algae is to let it complete its lifecycle which is about three weeks. It will cover most of the glass over that time, but then die and you can scrape it off. By scraping it off every other day, you are only spreading it around as the spores travel about the tank.
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65g planted tank - 200W heat - PC 192W/6700K - Eheim 2217 - Pressurized CO2 - EI Dosing
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