Results 1 to 2 of 2

Thread: Black algae

  1. #1
    Join Date
    Jun 2014

    Default Black algae

    Does anyone know how to get rid of stubborn black algae? I have tried various expensive algaecides and nothing is working? Please advise.

  2. #2
    Watermom's Avatar
    Watermom is offline SuperMod Emeritus Quark Inspector Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars Watermom 4 stars
    Join Date
    Dec 1969
    Charleston, WV

    Default Re: Black algae

    To confirm that it is black algae, scrape a bit up and smear it on a white piece of paper. Black algae will smear green.

    We'll need some additional info to be able to help.

    1. What kind of pool is it? What is the volume?
    2. What size pump and what kind and size of filter?
    3. Exactly what all have you added to the pool, meaning ingredients and not just product names like 'shock' or 'algaecide.'
    4. What does the water look like?
    5. Do you have a drops-based test kit? If so, what kind? Post current numbers.

    If you don't have a good drops-based test kit:
    The test kit that we think is by far the best is the Taylor K2006 or 2006C (better buy). Not available locally but you can get it through this link that takes you to Amazon: You'll need this kit to be able to measure the high chlorine levels you will need to be able to eradicate your pool of algae. Other test kits can only measure to 5ppm which is not gonna do it.

    Until you can order and get the K2006, go to Walmart and see if they have the HTH 6-Way drops-based kit (no test strips!) and get that. If they don't, get an OTO/Phenol Red kit (yellow and red drops) instead. Use it to test and then post your numbers. Also while you are at WallyWorld, get several jugs of their generic 8.25% bleach and a couple of boxes of 20 Mule Team Borax (laundry aisle) and a gallon of distilled water.

    Repost with requested info and then someone here can try and help you.

    Welcome to the Pool Forum!

    (Until you registration is completed, you won't be able to see the rest of the forum while you are logged in. So, copy that link and then paste it into a browser window after you log out.)

Similar Threads

  1. Black Algae
    By gfritz1 in forum Dealing with Algae & Slime
    Replies: 1
    Last Post: 06-13-2014, 08:40 PM
  2. Small Black dots in salt pool. Black algae?
    By jeanne3434 in forum Dealing with Algae & Slime
    Replies: 3
    Last Post: 04-06-2014, 04:58 PM
  3. trying to get rid of black algae
    By tulsapool in forum Dealing with Algae & Slime
    Replies: 1
    Last Post: 06-25-2013, 12:45 PM
  4. Black Algae
    By hannaswims2013 in forum Dealing with Algae & Slime
    Replies: 2
    Last Post: 05-29-2013, 01:45 PM
  5. Help! possible black algae
    By sugargirlz44 in forum Dealing with Algae & Slime
    Replies: 6
    Last Post: 07-17-2006, 04:20 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts