This is by far the best and most economical spa cartridge filter cleaner.

Oxybrite from GLB is a very popular shock to use with most santizing system. It has a built in clarifier; so it shocks and clarifies at the same time. We only offer the best in spa supplies. We have tried all sorts of shock, and the end result is either GLB or SeaKlear for the purest shock and the strongest per weight, saving you money.

GLB Oxy-Brite 5 Lb size

GLB Oxy Brite shock 2.2 LB. 

GLB pH Down 2 LB size.  Lowers both pH and total alkalinity. Dry acid.

GLB pH Down 4 LB granular.   Lowers both pH and Total Alkalinity.

GLB pH UP 4 LB Granular. Raises pH only not TA.

GLB pH UP. Raises pH with less effect on the total aklinity. 2LB size

GLB TLC is the most powerful shell surface cleaner there is available.

Haven Spas Replacement Filters for your Haven model with Quad 50's for 100 sq ft UPPER cartridge. Need two UPPER's and two LOWER's for a set. Order lowers separately.