best way to get old dead rock white again???

[demon666]

looking for help to get my old dead rock white againit was removed for my tank awhile ago after it had turned green with algee that i couldnot get rid of now i am looking to get rid of this green ting on the rock what is the best and fastest way to do this????? i have boiled it and scrubed it but i still cant seem to get rid of it any sudgestions pls

[Psyire]

Soaking in Vinegar/Water might loosen it up. (couple days)

[muck]

Pressure Washer?

[demon666]

lol thats funny ryan

[GrimReefer]

if it's dead, you may as well sun-bleach it. i realize it's not the best time of year for that....but it's proven very effective for me. and most importantly...it's safe.

[demon666]

yai guess ill have to wait for the sun to return to do that would a 100% vinagar bath work?

[Quagmire]

Vinagar disolves calcium.So if you do it becarefull,you wouldn't want to get up the next morining and find a pile of mush.But maybe it will work to disolve the outside layers with the algae on it.But I think after you would want to put it in fresh water to dilute the vinagar that seeped into the holes in the rock.Plus the vinagar will act as a carbon source for bacteria,will be a good kick start for your cycle,but make sure you do a water change after cycling.It may cause a large bloom and use up all the oxygen.

[demon666]

ok so more or less i am at a loss for this rock till next year when it gets sunny again?????

[Quagmire]

If it was my rock I would first put it in a bucket with water and leave it a couple days.Then test for No3.If I got a large No3 reading I would dump the rock.If a low or 0 No3 reading I would get a steel brush and scrubb untill the rock is white.

[Ruth]

You know that if you maintain your water quality within the generally accepted levels as far as calcium/alk/mag. and have decent lighting that rock is probably going to be purple in about 6 months anyway so why bother?