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Discussion Starter #1
Is there a reason black tanks need to be ABS? Does waste eat through water tanks material? Is it just a thicker material in general? Just curious because its much harder to find affordable black tanks of decent size compared to fresh and grey tanks.
 

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It's fine to use polyethylene tanks for grey and black water. Light entering a tank can fuel organic growth.. We coated our under vehicle fresh tank with Rustoleum bed-liner spray to keep the light energy out.
 
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