What level of cc can you smell?

[xmike]

Howdy fairly new to pools.

Fc 17
Cc 1
Cya 50
Ch 0
Ta 190
Ph 7.6 - 7.8 ish
Tf100 test kit (1 year old)

7k gallons vinyl (will update sig when I get in front of a computer)

At what cc level is the chlorimine smell typically noticeable?

Started slamming since was having issues maintaining fc and was getting a tiny bit cloudy. I think maybe algae was starting (gray or white specs barely noticeable).

17 fc / 1cc when I went to bed.
This morning it was 16 fc and still 1 cc but had a noticeable chlorine smell so was curious about that.

Thanks

- Mike

 

[woodyp]

Welcome to the forum. Relative humidity has a lot to do with that just walking around the pool. To me at least.

 

[xmike]

Welcome to the forum. Relative humidity has a lot to do with that just walking around the pool. To me at least.

Well I live in coastal SC. Relative humidity is often oppressive in the summer. You mean as it increases you notice the smell more?

 

[woodyp]

Yes Sir.

 

[mikefamig]

I think that the reason that you didn't get a lot of replies here is because most people here don't let it go that far. If you use this BBB and SLAM process you won't ever smell your water.

I did smell CC once when cleaning up my pool and the CC was 5 or so and I still didn't smell it until I added a few gallons of liquid chlorine to begin a SLAM. I especially smelled it on my arms immediately after removing them from the water.

Mike.

 

[Catanzaro]

I usually smell the CC on bathers once they come out of the pool, use the towels to dry up and it lingers all day. Luckily, no one has invited any of us to a swimming pool party, as unless the water is taken care of with a proper test kit and the homeowner is diligent, 9 out of 10 times, the water is cloudy and dirty. You can always tell TFP water.

 

[Vickery]

Welcome to TFP! If you check the Chlorine/CYA chart (Pool School - Chlorine / CYA Chart) you will see that with a CYA of 50 your FC is not yet up to shock level. More chlorine (or a partial water replacement) will be required to destroy the algae bloom you are experiencing.

 

[JamesW]

Chloramines can be in 3 different forms. Monochloramine, dichloramine and trichloramine.

Trichloramine is also called nitrogen trichloride. Nitrogen trichloride is a gas that escapes from the water and creates the most smell.

So, the total amount of chloramine is relevant but the amount that is trichloramine is the deciding factor in the smell.

 

[Poolzzz]

My pool is completely sealed up with a bubble cover plus hard cover 24/7 except for maybe an hour a day to swim. I get the "bad pool smell" when first uncovering the pool but never measure any CC.

If the weather is poor the pool may not be used for several days and I'll get a stronger pool smell upon first opening but never measure any CC.

If the pool has been unused for a week or so I probably will measure 0.5 CC and get the smell also.

So you can definitely smell something before it can be measured. Being outdoors it dissipates fairly quickly. It's possible the "pool smell" may last longer once you measure some CC but that's something I've not paid attention to so can't comment.

I do disagree with this comment though: "If you use this BBB and SLAM process you won't ever smell your water." True that bad pool smell isn't there but there is a faint chlorine smell.