Quoted from Rdoyle1978:There's no doubt evaporust is magic.. off to HD tomorrow to find some PVC and cap of sufficient length. Evaporust is $27 a 1/2 gallon in my neck of the woods.. wish I could find a cheaper option...
Rdoyle1978 I could only find it here in half gallons too. But $21/gal shipped with Amazon prime:
Evapo-Rust ER012 The Original Super Safe Rust Remover - 1 Gallon https://www.amazon.com/dp/B00M0TLQ66/ref=cm_sw_r_cp_api_A1AfzbE1XM766