Need help staying on top of your weekly pool maintenance?

Download our FREE pool maintenance calendar that'll help you stay on top of your swimming pool care this season. Just enter your email address to download the guide today!

We respect your privacy and you can unsubscribe at any time. Join 68,428 other pool owners.

Get our FREE Weekly Pool Care Newsletter

Sign up for a free weekly newsletter to help you take care of your swimming pool.

We respect your privacy and you can unsubscribe at any time. Join 68,428 other pool owners.

How to Get Rid of Pink Slime and White Water Mold in a Pool

Click here to get our FREE weekly pool maintenance newsletter!

Pink slime and white water mold seem to go hand in hand. They are commonly misunderstood in the swimming pool world, but we are going to clear some things up.

How to Get Rid of Pink Slime and White Water Mold in a Pool

Here are the facts about pink slime and white water mold:

When toilets, showers, sinks, and bathtubs get that orange color stain, that’s pink slime – not metals. Pink slime and white water mold can grow wherever there is water.

[NOTE: Since they are very resistant to pool chemicals, including chlorine, we are going to be using some mega doses to get rid of it, so be prepared.]

Now that you’ve identified the problem and learned the facts, let’s get rid of it.

pink-slime-white-water-mold

Getting Rid of Pink Slime and White Water Mold

1. Clean!

Manually clean and remove all the pink slime and white water mold you see. Check inside the filter system, in and around the skimmer and return jets, behind ladders, and in very shady spots of your swimming pool.

2. Shock!

Before you add any chemicals to your pool, make sure to pH (7.4 – 7.6) and alkalinity(100 – 150 ppm) are at the right levels.

I recommend quadruple shocking your pool with chlorine shock. That means adding 4 pounds of calcium hypochlorite shock per 10,000 gallons of water. Yes, this is a lot, but like I said, these elements are very resistant to pool chemicals, including chlorine.

3. Filter!

Run your filter continuously for 24 hours. Afterwards, it would be a good idea to chemically clean your filter system using a filter cleaning chemical.

4. Test!

After about 4 days or so running your filter system and continuing to clean your pool using a brush and manually vacuum, it’s time to test your water.

Use a test kit, test strips, or bring a sample of your water to your local pool dealer to get it tested. Make sure you bring your pH and alkalinity back up to the right levels.

How to Prevent Pink Slime and White Water Mold

We know that they are naturally occurring problems, so we have to defend our pool against it.

Just like using a bleach in your toilet to prevent pink slime, we are going to do the same with a pool, but instead, we use chlorine.

Make sure you keep the proper level of chlorine in your pool at all times: 3ppm (parts per million). And brush and vacuum your entire pool often – I recommend doing this twice a week.

Happy Swimming!

Recommended Reading

Baquacil Pool Chemistry 101: The Complete Guide
The complete guide to using Baquacil pool chemicals. Learn how to balance your pool chemistry just right so your water stays clean and clear all season.
How to Convert Your Pool From Baquacil to Chlorine
If you currently use Baquacil, and feel the need to switch to using chlorine, we have the step by step solution to converting from Baquacil to Chlorine.

The Art of Pool Care

Frustrated by adding chemicals and trying to keep your pool clear all the time?

We cut out all the fluff and confusion of pool maintenance and stripped it down to the bare bones in this easy-to-read illustrated digital guide.

Click here to learn more

Last Updated: Sunday, July 28th, 2013