have always used Tesco
Springforce Thin Bleach 2L
soak it for 24hr in 50/50 with tap water - Rinse with tap water - then soak in 5ltr tap water and 5ml sachem prime 24hr.
works for me.
You guys find has to keep being stirred too? Always find so much stays brown and or black. Edges bleach but that’s it.
Activated carbon working v well for me too atm
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