Intek 15' x 48" - water is clear, but pool liner now looks greenish instead of blue

[KevinD]

Hi Watermom,

I started the test process tonight. After adding/mixing the 1/2 cup of bleach to both test buckets and waiting 15 minutes, the water color in the white 5-gallon buckets of both the hose water (used to fill pool) and the actual pool water both have a similar slight green tint to them. There were no green colored items in the nearby area where I am conducting the tests to give the green tint to the water. Please note that both water samples seemed to have a slight green tint even before adding the bleach, however, i could not tell if the greenish tint got stronger or not after adding the bleach. It is a very faint tint, so it is difficult to compare/contrast.

I will report back again tomorrow night after 24 hours. I just added the 1/3 cup of Borax to each and mixed it in. It was difficult to get it to completely dissolve in the hose water because it was cold.

Kevin

[KevinD]

Hi Watermom,

I just checked both buckets after the first 24 hour period. Listed below are is the info for each sample:

Pool Water:
clarity = clear
color = very light green tint
sediment = noticed 4-5 very small black specs, size of sand grain (not sure if these are new)

Hose/Source Water:
clarity = clear
color = very light green tint
sediment = noticed 4-5 very small black specs, size of sand grain (not sure if these are new) as well as one larger black clump, maybe size of pencil eraser. I do not remember seeing this before...

I will report back again tomorrow night. Do you want Chlorine levels tonight? Please note that I just received my Taylor test kit in the mail today, so I now have a more accurate test kit.

Kevin

[aylad]

If you'll go ahead and measure your chlorine this evening after the sun is off the pool, and measure it again in the morning before the sun hits the pool, we can rule out or confirm algae or something else consuming your chlorine, by comparing the two readings. If you'll use the 10 mL sample instead of the 25 mL sample, and multiply your drops x 0.5, you'll make your reagents last longer.

Janet

[KevinD]

Hi Janet,

I measured the chlorine level earlier this evening in my pool using the Taylor kit. The chlorine level measured at 11ppm. I did use the 10mL water sample in order to conserve the reagents - thanks for the recommendation.

I will measure again in the morning and report back.

I am definitely thinking it is not algae and something in the water chemistry, maybe some metals or something else in the water composition that gives a green tint. The pool liner and water is clear, but there is a green tint to the water when you look at it through natural lighting. It is definitely not green on the pool lining, it is the effect is light passing through the water that makes it have the light greenish tint as you look into the depth of the water. It is still sparkling clear, just with a green tint as light passes through the water. It was not this way on day 1 after setting up and filling the pool.

Kevin

[KevinD]

Hi Janet,

Per your request, I measured the chlorine level again this morning. It measured at 10ppm (20 drops in the 10mL sample). Please note that I have not added any new bleach into the pool water since shocking it on Sunday night.

Kevin

[Watermom]

I don't think it is algae. Doing the overnight test pretty much confirmed that. Looks like you have some metal in there. Kind of odd with city water. I've asked Ben or Marie (our metals guru) to take a look at your thread.

[mbar]

When you drain or lower your water level is there a change in the color of the liner or bucket? If not, then the color is in the water. Do you have copper pipes? It seems to me that the water is tinted when it comes out of your spigots, the slight greenish tint sounds like it may have some copper in it. You can find out if there is copper in your township water. If the water is tinted, I don't think it will be a problem. Do you know if anyone else in your area has the same problem? This is a tricky one since it is the same color in the bucket with your fill water. Please post and let me know,

Marie