HTH

HTH Blackal Shock Anti Algae 1 Liter It eliminates all forms of algae and prevents them from reappearing. Its composition makes it even effective in algae with high resistance to chemicals such as Black algae, Pink Algae, Mustard Algae and more. ...

HTH Clarishock Powerful crystal clear detergent that can be used even when the filters are in operation. 1 Liter ...