I’ve got this plastic tank from someone, and I’m going to be using it specifically to hold shower water. It has this pink coloration to the bottom. I know that it was only used for water in the past, and has been sitting more or less covered outside for a year. I can’t really get in there with a scrubber. My question is, what do you think it is, and should it be okay for shower water? I’m soaking it in vinegar now.
Pink color in a water tank could be antifreeze remnants from winterizing.
Use an unscented bleach solution, not vinegar. 2 cups bleach per 100 ga. water. Let it sit filled for 8-12 hours. Dump and rinse.
The city water where we live always leaves a pink stain if we let it dry on something. I don’t know what it is but I assume it is harmless as it is city water.
Source: Repurposing water tank
