“BLACK ALGAE SHOCK/ TRI-CHLOR GRANULES 90” has been added to your basket. View basket Previous Product Next Product TEST KIT-SALT WATER $15,312.21 100 in stock TEST KIT-SALT WATER quantity Add to basket SKU: PETKK1766 Category: CHEMICALS Tag: CHEM Related products CHEMICALSRETAIL BLACK SHOCK/ TRI-CHL – 4LBS $2,600.00 Add to basket Quick View Quick View CHEMICALSLO-CHLOR LO-PHOS E+ $5,367.23 Add to basket CHEMICALSTRICHLOR CHLORINE TABLETS $2,875.00 Add to basket