✦ THE LAUNDRY ROOM ✦

Bleach-Out Calculator

Tank teardown math: how much bleach, how long, and how to neutralize.

Volume

Bleach %

Household bleach: 3–8.25%. Liquid pool chlorine: 10–15%. Liquid sodium hypochlorite only — no granular pool shock or tablets.

Use case

Between QT Fish Standard sanitize between residents 200 ppm · 30 min Bleach Bomb Post-outbreak / Velvet eradication 500 ppm · 60 min Custom Free fields for special situations user-defined

Neutralizer

Sodium Thiosulfate Correct stoichiometry for high-bleach scenarios. Buy in bulk for cheap. Seachem Prime Familiar but limited. We’ll warn you if your dose exceeds Prime’s effective range.

Bleach Dose

— ml

—

Contact Time

— min

Let it sit. Don’t agitate. Cover if possible.

Countdown Timer

30:00

Timer never auto-starts; begin after the bleach is added.

Neutralize

— g sodium thiosulfate

—

Stir gently. Wait 5 minutes. Test with a chlorine test strip if you have one.

Rinse

2–3 fresh-water rinses recommended after neutralization. Test final water with a chlorine test strip to confirm zero before adding livestock.

Bleach-Out Schedule

☐ Empty tank, remove all livestock and live rock
☐ Add — ml bleach (—%)
☐ Wait — minutes (start: ____________)
☐ Add —
☐ Wait 5 minutes
☐ Rinse 1 (____) Rinse 2 (____) Rinse 3 (____)
☐ Test final water with chlorine strip — confirm 0 ppm before reuse