Water Chemistry /
Does Copper Pipe in a Pool Skimmer Work for Algae?
Copper in a pool skimmer is not a dependable algae fix. It can stain surfaces, upset water balance, and should never replace proper sanitation.
Archive date: this article was written for PoolSkimmer on Oct 7, 2026 and given the earlier archive date of Nov 17, 2025 so the blog reads as an organized archive. It was not published on that date.
In short
The answer is no. A copper pipe in the pool skimmer is not a dependable means of algae control. While copper can inhibit algae in a tightly controlled environment, a loose pipe in the skimmer is hardly that. It is an uncontrolled approach that will put off copper at random, stain your surfaces and cause more headaches than it cures.
When you have an algae problem, the solution is to put proper sanitation, filtration and water balance in order with the right methods. Copper does not take the place of chlorine or any other approved sanitizer.
The reality of copper in the skimmer
The skimmer is there for debris, not for dosing metals into the water. So when the question comes up as to whether copper in the skimmer will halt algae, one cannot say so with any confidence.
What a copper pipe will do:
- Put copper ions into the water in an unpredictable fashion.
- Offer some help with algae only if the chemistry is already in check.
- Stain everything from the plaster and vinyl liner to the fittings.
- Corrode and discolor metal components in its vicinity over time.
What it will not do:
- Sanitize the pool.
- Do the job of brushing, filtration or chlorine.
- Correct a dead spot where circulation is poor.
- Make up for a dirty filter or a pump on its last legs.
A better approach
There is no need for a copper shortcut. Follow this routine instead:
1. Shut the pump down to service the skimmer basket. 2. Clear out leaves and the like to let the water flow. 3. Give the walls, steps and waterline a good brushing to dislodge the algae. 4. See to the filter per the manual and make sure the sanitizer is doing its job. 5. Where water has a habit of standing still, work on the circulation.
Wear gloves and eye protection when dealing with chemicals or unsightly surfaces and heed the instructions on the labels.
Mistakes to avoid
Copper is seen as an easy hack by some homeowners, but these errors tend to compound the issue:
- Throwing a piece of copper in the skimmer and expecting the algae to vanish.
- Overlooking problems with the sanitizer or water chemistry.
- Relying on metal when the pool is already running green or cloudy.
- Not taking the pipe out once you see staining start.
- Getting in the water when it is unsafe or there is an electrical fault.
If the pool has a metallic hue or blue-green and brown stains, the copper is likely part of the trouble.
Time to get a professional
A qualified pool pro should be called if:
- Normal cleaning fails to keep the pool from turning green.
- You are seeing signs of metal buildup or suspect the pump and return lines are not moving water as they should.
- There is a blockage in the suction side or skimmer line.
- The sanitizer system is unable to hold the pool clear.
- There are leaks, corrosion or electrical concerns on the equipment pad.
An expert can tell you if you are looking at algae, a circulation problem or something else and put forward a safe remedy.
The bottom line
Do not count on a copper pipe in the skimmer for algae treatment. It may put some copper in the water, but it is no substitute for tending to the pool’s care and can leave its mark. For clear water, stick to the basics of filtration and sanitization and put in a call to an expert if the matter persists.