Need a little reassurance

[butchcassidy]

I'm back in the pool game again. Had an Intex for a couple of years. Took a break and now I'm back, this time with a more professional build (in sig). Pools been running for a week. Started out a little cloudy and off color, but one day of filter running and it cleared right up. Could that just be the new liner? Anyway, today's test results
FC 4.0
CC .5 (maybe) slight pink, consistent for all three tests this week
PH 7.5
CH 150
TA 110
CYA 30
CSI -.27
TEMP 82°

The reason for this thread you ask. I have seen a few backswimmers (I think), no more than 6 at a time for the last two days. I also get a strong chlorine smell at the return only in the immediate seconds after starting the filter system. Combined with the CC number, I am concerned all is not right. Should I be worried? SLAM?

TIA

Butch

 

[bmoreswim]

If the smell goes away almost immediately and your CC is .5 or less that’s fine. However, you should perform an Overnight Chlorine Loss Test to ensure you don’t have any algae lurking in the water to be safe.

 

[butchcassidy]

Thanks. Weather will delay the OCLT for a few days but I will get on it soon.
In general, should I be concerned about a couple backswimmers? Are a small number inevitable or should they leave immediately?

 

[zea3]

Keep your FC on the higher end of your range at 6ppm. Backswimmers don't like chlorine and they will go away if you keep it high enough.

 

[butchcassidy]

Well, I raised my FC to 7 last night. CC read 0 and aced the OCLT with no chlorine loss. And guess what? Those pesky were still hanging out having a grand time. I'll keep the FC up for a little longer and see what happens.

 

[bmoreswim]

Good deal on passing the OCLT. All good on that front. On the backstrokers or whatever, I have no idea.