So this is a follow on to Rust in steel tank.
Sorry for the bad image. Best I could do, but I think you can see the rust like streaks. I'm going to follow the advice in the above mentioned thread of phosphoric acid. I have 3 tanks to clean up. This is the worst one. I'll report back later with the results.
BTW, I did clean out best I could with one of these:
Sorry for the bad image. Best I could do, but I think you can see the rust like streaks. I'm going to follow the advice in the above mentioned thread of phosphoric acid. I have 3 tanks to clean up. This is the worst one. I'll report back later with the results.
BTW, I did clean out best I could with one of these: