How to Treat Mustard Algae

This is an image of mustard algae on a pool wall.Since you are here reading about how to treat mustard algae, you have probably experienced a chlorine demand due to the existing mustard algae in your pool. That being said, it is important to maintain a strong and for that matter, higher than normal chlorine level. Filling your skimmer basket or floater with your maintenance chlorine tabs or sticks can do this and will be a great source of constant chlorine. On top of that, it is very important to shock your pool throughout the process of treating mustard algae. The shock contains chemical compounds designed to oxidize and kill the organic contaminants in your water.

Keeping a strong chlorine level through chlorine tabs or sticks and through granular shock is very important in the world of fighting mustard algae. However, adding a strong algaecide is even more important. In fact, adding both chlorine and shock, along with algaecide and allowing them to do their magic and work together is a match made in algae killing heaven.

For pre-existing algae and in this case, mustard algae, the suggested algaecide would be Banish. Banish has a strong formula built to kill all types of algae.

Something to keep in mind, as stated before, mustard algae is different from other types of algae. Mustard algae can find a way to reintroduce itself back into your pool through toys, pool vacuums, brushes, nets, swimsuits, and any other objects that have been in the pool. Because of this, it is important to put all of those objects in the pool before treating for mustard algae, so they too can be treated.

Here are the steps for treating mustard algae:

1. Before attempting to treat your pool for mustard algae, it is important to balance your water. Doing this will increase your ability to treat and kill the existing algae.
2. Maintain a constant and strong chlorine level by adding chlorine tabs or sticks to your skimmer basket or floater.
3. Brush the bottom and all sides of your pool to release the mustard algae into the water for better contact with the chemicals that will be added.
4. Put all objects that have been introduced to the water at any point back into the pool, so they too can be treated for mustard algae. (Toys, pool vacuums, brushes, nets, swimsuits, and any other objects that have been in the pool)
5. Shock your pool with the recommended amount per gallons of water and brush all of the sides and bottom of the pool to prevent staining.
6. Add the recommended amount of Banish to your pool. The needed amount per gallon of your pool can be found on the back of the bottle.
7. Let your pool circulate and let the chemicals do their work, remember to wait 5-7 days before adding another dose of Banish.
8. After 24-48 hours, test strip your water or bring in a sample to test your chlorine levels. Remember it is important to have strong chlorine levels throughout this process.
9. Once the water is clear of mustard algae, chemically clean your filter media (cartridge, sand, or glass) with Strip-Kwik filter cleaner.


Contact Us

  • Please select one or more