Restore your saltwater cooling system to best performance Is your saltwater cooling system getting gunky and you're balking at the cost of a mechanical cleaning? Help restore it to its best performance. The Salt Attack Descaler 4L is a cooling system cleaner and marine growth remover. It's fast, safe, and a cost-saving alternative to a mechanical cleaning of saltwater-cooled cooling systems. This high-strength marine growth remover and cooling system cleaner is also safe, biodegradable, and non-toxic. Sorts out hard-to-remove deposits The Salt Attack Descaler 4L can remove and dissolve barnacles, calcium, rust, lime and other mineral deposits. Super concentrated formula Because it's such a strong, concentrated cleaner, most applications can be safely completed within 3 hours. Marine growth descaler The Salt Attack Descaler 4L is ideal for seacocks and sea strainers, heat exchangers, sea water cooled exhaust systems, refrigeration and A/C cooling systems. Salt Attack Descaler 4L Features: 4L Mixes at 5 parts water to 1 part to make 20L of descaler mix Cooling system cleaner and marine growth remover Helps restore dirty saltwater cooling system to best performance Fast and safe Biodegradable and non-toxic Cost-saving alternative to a mechanical cleaning Sorts out hard-to-remove deposits such as Barnacles Calcium Rust Lime and other mineral deposits Super concentrated formula Most applications can be safely completed within 3 hours Ideal for Seacocks and sea strainers Heat exchangers Sea water cooled exhaust systems Refrigeration and A/C cooling systems Note: Salt-Attack Descaler mixes at 5 parts water to 1 part Salt-Attack Descaler. 4L makes 20L of descaler.