“OTO – 8oz” has been added to your basket. View basket Previous Product Next Product RETAIL BLACK SHOCK/ TRI-CHL – 4LBS $2,600.00 100 in stock RETAIL BLACK SHOCK/ TRI-CHL - 4LBS quantity Add to basket SKU: PCBA4LBSR Category: CHEMICALS Tag: CHEM Related products CHEMICALSBLACK ALGAE SHOCK/ TRI-CHLOR GRANULES 90 $2,990.00 Add to basket Quick View Quick View CHEMICALSALGICIDE LO-CHLOR-ALGAECIDE 1 GAL $11,862.50 Add to basket Quick View Quick View CHEMICALSTEST KIT- 2 WAY $4,781.70 Add to basket