Quote:
Originally Posted by Schmike
Wouldn't 2-4% salt already killed the BBs? The most I add was 5kg to my 6x2.5x2.5 which is 900+ litres of water and that only contains ~0.5% of salt.
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1% is to curb nitrite toxicity. A 2-4% won't hurt the BB much but it does slow down the process. But it can be easily overcome once u dilute the tank during WC.