Black Spot Removal for Fibreglass Pool Surfaces
Lo-Chlor Spot Away is a high-strength stain treatment formulated for the removal of black spots in fibreglass pools, otherwise known as osmosis.
It is particularly effective for the treatment of osmosis and is also suitable for removing stains and deposits caused by calcium, copper, and iron in fibreglass pools.
This specialised treatment is made specifically for fibreglass pool surfaces and is used to remove the visible black spots associated with this condition.
Features & Benefits
- Designed for black spots in fibreglass pools caused by osmosis.
- Targets the visible black spotting that appears on affected fibreglass surfaces.
- Effective on calcium, copper, and iron deposits in fibreglass pools.
- Suitable for a broad range of fibreglass pool stains as a corrective surface treatment.
- Helps restore the appearance of spotted or stained fibreglass pools with a targeted single-product treatment.
How It Works
Spot Away is used to remove the visible black spots that appear in fibreglass pools as a result of osmosis.
This condition is specific to fibreglass pools and should not be confused with black spot algae. It is a reaction in fibreglass pools that produces a cobalt hydroxide accretion on the fibreglass surface.
By treating this visible surface reaction, Spot Away helps improve the appearance of affected fibreglass pool surfaces.
How to Use
- Do not chlorinate the pool for 2 days prior to using Lo-Chlor Spot Away, and remove free available chlorine from the pool water before treatment.
- Thoroughly backwash the filtration system to achieve maximum circulation.
- Add the required dosage to the pool while the filter is running.
- Operate the pump for 4–6 hours daily for up to 7 days if necessary.
- If stains persist, a second treatment may be necessary.
- When satisfied with removal of stains, add a Lo-Chlor sequestring agent.
- Balance the pool water and superchlorinate.
Dosage & Coverage
- Pack size: 4 kg.
- Use rate: One 4 kg pack per 50,000 litres of pool water.
Important Usage & Compatibility Information
- This treatment is for fibreglass pools only and should not be confused with treatment for black spot algae.
- This treatment removes the visible black spots but does not stop the osmosis that caused them.
- Black spots will normally reappear after three to six months.
- Do not add any other pool chemicals or operate any chlorinator during the treatment period.
- Never add via the skimmer basket or filter.
- After stain removal, follow with Lo-Chlor Metal Solution to help manage dissolved metals after treatment.
Regular treatment with Lo-Chlor Spot Away will assist in keeping black spots under control and the pool in better condition.
Why Choose Lo-Chlor Stain Busters?
Lo-Chlor Stain Busters is a specialised range created to tackle different types of pool stains and scale, because no single treatment suits every pool condition.
The range includes targeted products for stain removal, scale treatment, and ongoing prevention, helping pool owners and pool professionals take a more accurate approach to problem solving.
Manufactured in Australia and trusted by pool professionals, Lo-Chlor formulations are made for real-world pool conditions and long-term pool care.
Frequently Asked Questions
What is Spot Away used for?
Lo-Chlor Spot Away is used for the removal of visible black spots in fibreglass pools, otherwise known as osmosis.
Is this for black spot algae?
No. The black spot described here should not be confused with black spot algae. This condition is specific to fibreglass pools.
What causes these black spots in fibreglass pools?
This black spot is a reaction in fibreglass pools that produces a cobalt hydroxide accretion on the fibreglass surface.
Will Spot Away stop osmosis permanently?
No. This treatment removes the visible black spot but does not stop the osmosis that caused it.
Will the black spots come back?
Black spots will normally reappear after three to six months, which is why regular treatment may be needed to help keep them under control.
Can Spot Away remove other stains?
Yes. In addition to visible black spots associated with osmosis, Spot Away is also effective in removing stains and deposits caused by calcium, copper, and iron in fibreglass pools.
