bugs said:I just scrape it off using one of those cheap glass scrapers. Get some traditional razor blades for the scraper. They get ruined in fairly short order but generally do a good job.
Nano Jake said:But doesnt that just scratch the glass? dont fancy scratching my opti tank!!
Themuleous said:I.ve wondered about pumping co2 into a small container of v.soft water would get the pH down really low so it would be a strong acid and using that to get limescale off but I've not go around to doing it yet.
Nano Jake said:
Nano Jake said:Is it safe to use lemon juice on a tank with fish in? obviously during a water change when the water level is at its lowest.
swackett said:Thanks for the reply James, I guess it must be etched as I can't seem to shift the some of the white watermarks.