BBB Fan with mustard algae in Intex pool

[Watermom]

What kit did you use to get your numbers? CYA tests top out at 100 so a reading of 100 can mean 100 or any number higher than 100. Redo the test with a dilution. Take equal parts of pool water and distilled water and then run the CYA test again with that mixture and multiply your results by 2. Then, post that reading.

I'm not too familiar with Yellow Out, but there was a fairly recent thread where PoolDoc gave some information and advice in regards to using it. From what he told the other poster, you want your pH high while using it.

I can't link the thread here because as a trial member, you wouldn't be able to follow the link. But, if you will first log out, you'll be able to see and read the rest of the forum. Look in the section of the forum called "Dealing With Algae and Slime." I bumped up the thread I want you to read that is titled "Yellow Mustard Algae and Yellow Out."

Welcome to the Pool Forum, by the way!

[BigDave]

Please do not use the sodium bromide. It will create a chlorine demand that will be very hard to overcome.

[Watermom]

Please do not use the sodium bromide. It will create a chlorine demand that will be very hard to overcome.

She already did ............

I have asked Ben to pop in on this thread when he is able.

[CarlD]

Oh, Boy! It's going to take a LOT of chlorine to clear out that sodium bromide. Doesn't it gunk up the filter as well, or is that only the Baq conversion that does that? As I remember, the S-B will kill algae and make the pool clear very fast (good), but getting the S-B out so it maintains FC levels is going to take as long and as much chlorine as it would have anyway (bad). Could be wrong about this.

If she can get 12.5% 5 gallon carboys it may be what's needed. And she MUST get a proper test kit--at least the WalMart HTH 6-way drop test kit, but preferably the K-2006.

[PoolDoc]

@ Carl, WM: sodium bromide is converted to free bromine when you add a chlorine source, such as bleach. Ammonium chloride is the other "Yellow X" product; it combines with chlorine to form monochloramine. You have to destroy monochloramine before swimming, but you can swim in brominated pools just fine. The problem is, you cannot 'stabilize' the chlorine (bromine!) loss, so usage is very high.

@ All: the mustard treat thread is here: http://www.poolforum.com/pf2/showthread.php/25757

"Stop Yellow" appears to be a Pinch-a-Penny product of the ammonia variety.

[CarlD]

I KNEW there was a reason not to add bromine to a chlorine pool.....