The Yellow Stuff Algaecide 2 lb Bottle
Product Overview
Mustard algae shrugging off standard shock requires a targeted bromide booster to break the bloom cycle.
Formulated by Jack's Magic, this 2 lb bottle (net weight 2 pounds) contains 99% Sodium Bromide to eradicate persistent yellow and mustard blooms. When paired with chlorine shock, it converts to active bromine, dismantling chlorine-resistant cell walls without altering water hardness or CYA. The Yellow Stuff delivers reliable results without foaming or damaging your pool surface, serving as a dependable algae solution trusted by pool professionals and homeowners alike. Purchase today to treat your pool and follow the bottle label instructions for safe, exact application.
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Benefits & What Makes It Different
99% Sodium Bromide Potency
Converts added shock into active hypobromous acid, neutralizing yellow algae strains that survive routine chlorine levels.
Non-Foaming Formula
Safely treats plaster, vinyl, and fiberglass pools without generating persistent surface foam or leaving residual staining.
Zero Stabilizer Impact
Eradicates severe blooms without adding cyanuric acid or elevating calcium hardness beyond target ranges.
Product Details
Sodium Bromide (99%)
Compatibility
- Compatible with standard chlorine, salt chlorine generators, bromine, and ozone systems
- Safe for use on plaster, pebble, vinyl, and fiberglass finishes
- Do not mix directly with chlorine shock in a bucket; add separately to pool water
When To Use This
Pro Tip
In southern zones and high-heat climates where intense UV accelerates sanitizer loss, mustard algae often hides in pool lights, ladder steps, and filtration equipment. Submerge all cleaning brushes, hoses, and swimwear in the pool during treatment so spores do not reinfect the water later.
Common Questions & Instructions
How does Jack's Magic The Yellow Stuff work against mustard algae?
The 99% Sodium Bromide in this 2 lb bottle acts as a catalyst. When introduced alongside chlorine shock, it produces active bromine, which rapidly penetrates the outer protective sheath of yellow and mustard algae.
What is the recommended dosing for a mustard algae breakout?
Refer directly to the product label on the bottle for application rates specific to your pool volume. Add alongside an EPA-registered chlorine shock at label rates, run the pump continuously, and brush all shaded areas thoroughly.
Will The Yellow Stuff affect my water balance parameters?
No. It does not introduce cyanuric acid or calcium. Maintain free chlorine at 1–3 ppm, pH at 7.2–7.6, and total alkalinity at 80–120 ppm before application to ensure the sanitizing shock works at peak efficacy.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.
