Old pucks... how potent?

drband

LifeTime Supporter
Jun 12, 2007
24
I have some old trichlor sticks (2 years old). Are they still chemically useful. I thought of using them since my cya is finally down to around 30 or so (took 2 years of nothing but BBB for it to come down from over 100!). If they are still good, I could put a couple in the skimmer while I am gone on vacation (1 week) and come back to a pool with chlorine and a bit more cya. Is this a good plan? :? Thanks.
 

drband

LifeTime Supporter
Jun 12, 2007
24
numbers

BTW, here are my numbers:

FC 7
CC 0
TC 7
pH 7.6
TA 120
cya 35

Had been keeping FC at 10 because cya was about 50 this spring when I checked... it's now about 35 (yesterday).

Water looks and feels great!
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
32,863
Sebring, Florida
Those are nice numbers....good work getting everything right! :lol:

Yeah, I'll bet they're still good and that's the perfect application for them. A couple may not be enough to get adequate Cl in there......the CYA increase will be very small.

Others familiar with sticks may better advise on the dosage but I think you've got a good plan.
 

eelhc

Active member
May 30, 2007
39
drband said:
I have some old trichlor sticks (2 years old). Are they still chemically useful. I thought of using them since my cya is finally down to around 30 or so (took 2 years of nothing but BBB for it to come down from over 100!). If they are still good, I could put a couple in the skimmer while I am gone on vacation (1 week) and come back to a pool with chlorine and a bit more cya. Is this a good plan? :? Thanks.
Funny...

I'm considering boosting my CYA from ~50 to ~90. I get a little too much FC loss at ~50.
 

drband

LifeTime Supporter
Jun 12, 2007
24
eelhc said:
drband said:
I have some old trichlor sticks (2 years old). Are they still chemically useful. I thought of using them since my cya is finally down to around 30 or so (took 2 years of nothing but BBB for it to come down from over 100!). If they are still good, I could put a couple in the skimmer while I am gone on vacation (1 week) and come back to a pool with chlorine and a bit more cya. Is this a good plan? :? Thanks.
Funny...

I'm considering boosting my CYA from ~50 to ~90. I get a little too much FC loss at ~50.
I'm definitely wanting to get back in the 50-60 range to have less FC loss. I had high cya for so long, I just let it go down naturally to see how long it took (2 yrs) and how low it would go. My FC loss level (approx 35 cya and lose about 5 ppm FC daily) requires a bit more daily attention than the 70 cya level did. At 70 cya, I could add 1/2 gallon every other day and still maintain good levels of FC. At 35 cya, I have to check and add clorox every day.