I have been using Randy's most recent recipe with NaOH for a few months. Am now pulling down tank and selling. Today was sump cleaning day..... every other day of my life will be better.
I have a very thin, very hard white deposit on the bottom of the sump which I think I recall Randy saying would be Magnesium Hydroxide..? but I cant find that post.
I am trying to clean it off and a blade makes no impression, so I assume it was a salt that an acid would dissolve. Have flooded the area with straight vinegar but after 2 hours it seems to have made no impression at all.
Advice please.? (alternatively I can tell the buyer I painted the sump floor..?)
I have a very thin, very hard white deposit on the bottom of the sump which I think I recall Randy saying would be Magnesium Hydroxide..? but I cant find that post.
I am trying to clean it off and a blade makes no impression, so I assume it was a salt that an acid would dissolve. Have flooded the area with straight vinegar but after 2 hours it seems to have made no impression at all.
Advice please.? (alternatively I can tell the buyer I painted the sump floor..?)