Tank cleaned by seller with pledge.
 

I purchased at tank and when it arrived, money changed hands I found out that he cleaned it with "Pledge Multi Surface Everyday Cleaner 99% Natural". How can I clean this out so that it won't affect my display tank. If I would have known ahead of time, I probably wouldn't have bought it.

Straight white vinager & a sharp razor should get any residue off the glass.

I would fill it full of tap water, use a bit of javel water in it and let it soak for a few day with this then rinse it well. Then I would fill it again with tap water and use Seachem Prime at high dosage to neutralise any residu from the bleach, then rinse it well with a garden hose. That should do it.