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sera KH/pH-plus

Stability and safety

  • Buffers and stabilizes the pH value
  • Is effective against biogenic decalcification
  • Creates appropriate conditions (e.g. for African cichlids)


  • The carbonate hardness (KH) is one of the most important water parameters in an aquarium.

    A majority of the fish species kept in freshwater aquariums refers relatively hard water. Furthermore, the KH serves as a buffer that prevents dangerous pH value variations (among others, rapidly sinking pH value).

    The KH should be kept at least at 6°dKH for all community tanks as a basic rule (considerably higher for special cases such as African cichlids). This ensures the fish do well, and the aquarium water turns out particularly durable and easy to maintain.

    sera KH/pH-plus precisely and lastingly raises the KH to the desired value. The pH value is gently raised as well and, above all, safely stabilized.


    Recommended dosage

    5 ml sera KH/pH-plus increase the carbonate hardness in 30 l of water by 1°dKH. We recommend raising the KH in an aquarium by not more than 2ºdKH per day. Check the pH and KH values with the sera pH-Test and the sera kH-Test 30 minutes before and after the addition.

    Product name SAP-Mat.-Label Content Comment Item no. SAP-Mat.-Number
    sera KH/pH-plus KH/pH-plus 100ml US/F 100 ml / 3.38 fl.oz. for 600 hardness liters (159 US gal.) 03810 42554
    sera KH/pH-plus KH/pH-plus 250ml US/F 250 ml / 8.45 fl.oz. for 1,500 hardness liters (396 US gal.) 03812 42564
    sera KH/pH-plus KH/pH-plus 500ml D/US/F/NL/I/E/P/.. (FS) 500 ml / 16.9 fl.oz. for 3,000 hardness liters (792 US gal.) 03814 43129
    sera KH/pH-plus KH/pH-plus 500ml US/F 500 ml / 16.9 fl.oz. for 3,000 hardness liters (792 US gal.) 03814 42569
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