5 Things to Know About Choosing Between Liquid Chlorine and Calcium Hypochlorite

Liquid chlorine is for daily maintenance Sodium hypochlorite is cheap, mixes instantly, and won’t raise calcium levels. Use it for routine chlorination.

Calcium hypochlorite is for heavy-duty shocking It’s concentrated (65% chlorine vs 10-12% in liquid) and shelf-stable. Great for killing algae after a party.

Liquid chlorine loses potency over time It degrades faster than granular, so buy fresh and use it quickly. You also have to haul heavy jugs.

Calcium hypochlorite spikes calcium hardness and pH If your fill water is already hard, you’ll battle scale. Pre-dissolve it to avoid bleaching your liner.

Choose based on your water chemistry For routine chlorination, liquid wins for simplicity. For a one-time kill shot, reach for cal-hypo. Skip it if your water is hard.