Borax and Copper, and Heater question

[Luggon]

Does Borax ( the 20 Mule Team) have any copper in it? I have a copper problem (3.5) and the only thing I add that I'm not sure if it has copper is the Borax.
Could it be the heater element from my 20 year old gas heater? It does not leak, and it heats. I did have to replace a pressure switch.
The heater is a Hercules 150M pool/spa heater. Is a new heater element available? I can't find the heater anywhere online.

[aylad]

Sorry I don't know a sure answer to your question--but I do know that Borax doesn't contain copper. My guess would be the heater element. I'm sure some of the equipment gurus will be along shortly to answer.....just wanted to welcome you to the forum!

Janet

[PoolDoc]

Hi Luggon;

If your pH has been low, your heater can definitely be the source of copper. However, I'm somewhat suspicious of the number you report (3.5). You didn't give units, but if you mean 3.5 ppm . . . you almost certainly already have visible stains. If you mean 3.5 ppb . . . it's a bogus result, unless you had the water tested at a genuine water analysis lab, and I do NOT mean a pool store. In any case, 3.5 ppb would not be a problem.

So, the question is, how did you get that number, and what are the units?

(And Janet is 100% correct: there is NO copper in 20 Mule Team Borax.)

Best wishes,

Ben

[Luggon]

It's from a BioGuard dealer's ALEX machine. I believe it is ppm, but it doesn't say. I don't see any stains; at least nothing obvious. When I clean the DE filter (Sparkle Up also) it is very green.

[PoolDoc]

Green filter debris tends is a fairly strong indication of algae. Copper depositing on the filter can be bluish green, but if it's 'greenish green', it's mostly likely algae.

I've never heard of a Hercules heater, so I can't help there.

What sort of pool / filter / pump do you have? What are your complete test results? (not just copper) What does your water look like?

[Luggon]

The stuff from the filter looks turquoise, so I there is some blue to it.
Water is finally clear. It got very cloudy at one point, and had foam almost as thick as shaving cream. After that I started to use Borax to bring up the pH instead of the Balance Pack.

The water has a bluish look to it now, but it does look clear.
Readings from the dealer. I have previous owners Taylor kits, not sure how old the reagents are. I need to replace reagents correct?

TDS 900 (not sure what that is)
CYA 133
TC 5
FC 5
pH 7.5
TA 161
adj. TA 121 (not sure what that is)
Copper 3.5
Iron 0.5


At opening this year, the we had
CYA 120
pH < 6.2
Copper 5
Iron 2
TA 10

So we think the acid may have etched the heat exchanger. It would be nice to find a replacement, or know a way to repair it so that it does not keep adding copper. We've changed the filter media 8 - 9 times since Memorial Day.