View Full Version : getting the purple off

10/01/2007, 12:04 PM
Whats the best way to get all the purple stuff off the back on a class tank. I bought it used, but would like to have the black paint showing. should i do it before i put water in, or after?


10/01/2007, 12:35 PM
Is the tank running? By "purple stuff" do you mean the encrusting algae commonly called coralline?

If it is coralline, soften it with full strength vinegar, then scrape with a razor blade. Just be careful around the tank's silicone joints. If the tank is already running, just go after it with the razor and skip the vinegar.

10/01/2007, 12:36 PM
Corallie aglae? razor blade and some elbow grease always worked for me.

10/01/2007, 01:32 PM
yeah its the corallie aglae..forgot the name.lol I bought the tank used, and would like to get it off. As it sits now there is no water in it. So i might try the vinegar

10/01/2007, 01:35 PM
Get some old dish towels and soak them in the vinegar, then hang them so they are laying against the coralline on the glass. IME this is one of the best ways to ensure it soaks in for a good amount of time - otherwise the vinegar will run off or evaporate.

10/01/2007, 02:06 PM
good idea DWZM, I've been staring at a 220g for many months now and was curiouis how i'd get it cleaned, I like that idea!

10/01/2007, 02:50 PM
If its empty lay it on its back and let the vinegar soak in. Vinegar is less than $2 a gallon so just pour the whole gallon in full strength.

10/01/2007, 07:20 PM
its on the stand, and its too much of a pain to take off. i will try the dish towel idea.

10/01/2007, 09:51 PM
vinegar and razor blade

10/02/2007, 08:55 AM
yeah, i spend about 2 hours using that stuff... got most of it off. Tanks starting to look good.