is it normal backwash orange

wantobpoolmaster

Active member
Jun 3, 2010
37
Just wanted to know if it was normal for orange/brownish water to come out when I backwashed sand filter. Just plastered pool and wondering if it can be dust. Also just changed sand in filter.
 

dmanb2b

TFP Expert
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Apr 4, 2009
3,734
NY
Mine tends to be tan/brownish. It's is probably the dust/pollen/soil in your area getting washed out of the filter sand and is fairly normal.
 

duraleigh

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Apr 1, 2007
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Sebring, Florida
Well, it's a good sign that the water coming out when backwashing is some color......that means your removing stuff from the pool that doesn't need to be in there.

As FPM suspects, it may be precipitated iron or it could be something else. It's still good that the water is dirty.....the filter is doing it's job.

If you can post a full set of test results, we can probably help you identify what it is or, at least, help you make a better determination.
 

wantobpoolmaster

Active member
Jun 3, 2010
37
ph-7.6
ch-200
ta-90
fc-low as I have been waitnhg 28 days before I can add salt due to new plaster. Been using liquid chlorine.
As stated earlier I feel it might be the metals coming out as I was filling the pool for three days and adding sequestrant in that time. Thanks for all the help
 

duraleigh

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It's still a guess, but I would lean towards dead algae as the cause. High temps and low chlorine for 30 days allows algae to get started. YOur low doses of FC are killing some of it but not all. What is killed, gets caught up in the filter and is (for me, at least) normally a brownish-yellowish color.

If you have sequestrant in the pool, that would tend to keep the metal in suspension and not precipitate in your filter.

How does your water look?
 

Bama Rambler

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Jun 22, 2009
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Let me just jump on this wagon! :)

You're not on a well but you're adding sequestrant, why?

Since you're on public water you can get an assay (water quality report) and find out if there is any metals in your fill water. A lot of places even have them online now. I'd suggest getting one because if there are no metals then sequestrant is a waste of time and money. Also, you putting stuff in your pool that you don't need.

You need to raise your FC up too. I, like Dave, suspect algae. How are you testing?
 

Rangeball

Well-known member
May 25, 2007
785
wantobpoolmaster said:
There is a very high iron concentration in the water on Long Island in NY. Thus a sequestrant was needed. Thanks
Oxidized iron turns orangish, bleach oxidizes iron...
 

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