Question on Tri-Chlorine Pucks and other chemicals for closing

[rdelisa]

Tell me if my thinking is right. I have a salt-water chlorination system, so my pool doesn't get any stabilizer throughout the year. My CYA is on the low side now.
Would it be wise to put a couple of floats with stabilized chlorine pucks in them? This is what my previous pool guys have done. I just want to make sure it is the optimum thing to do.


What else is necessary chemical-wise for closing?

Algaecide: I have done the borax treatment to maintain a good level of borates. Is an algaecide (Polyquat60) still necessary?
Metal Remover? What brand and type?


Thanks much,

Rob

 

[Griswald]

With a SWG, your stabilizer should be quite high, 60 is good and 70 or 80 is not out of the question.

What is your CYA level now?

 

[Catanzaro]

Follow the closing procedures in pool school regarding chemicals. Your CYA should be at 70 to 80. If you have not added any and are on the low side, then you could have a pool out of balance. In addition, what test kit are you using for the water. We here at TFP recommend only a few kits and test our own water. PolyQuat should be used, at least IMHO. Some people skip on this. Everything at closing is based on comfort.

 

[jblizzle]

If you are going to add polyQuat, you should not add it with the FC at shock level, you have to wait for the FC to drop and then add it.

I think that is why many skip it. Just raise FC to shock level for your CYA and then shut it down.

 

[rdelisa]

Wow! I didnt realize my CYA needed to be higher with a SWG. I’ve been keeping mine around 30; but the water has been beautiful in the 4 years I’ve had it. I will definitely add the pucks and maybe a tad of stabilizer.

would this explain why I often have a message on my SWG screen stating low salt or low temp even though both are fine?

If you are going to add polyQuat, you should not add it with the FC at shock level, you have to wait for the FC to drop and then add it.

I think that is why many skip it. Just raise FC to shock level for your CYA and then shut it down.

- - - Updated - - -

I use the K2006.

Follow the closing procedures in pool school regarding chemicals. Your CYA should be at 70 to 80. If you have not added any and are on the low side, then you could have a pool out of balance. In addition, what test kit are you using for the water. We here at TFP recommend only a few kits and test our own water. PolyQuat should be used, at least IMHO. Some people skip on this. Everything at closing is based on comfort.

 

[jblizzle]

Low salt warnings are usually due to scaling in the cell or the cell starting to reach the end of its life.

Higher CYA would allow the SWG to run less to maintain adequate FC ... thus making the cell last longer.

 

[Catanzaro]

Agreed:

This is why I mentioned this in my closing procedure (below). I do not even bring to shock level because I know the levels will not come down that much and the pool is clean. All depends on the pool and if there is any clearing up to do. A lot of pools need that extra bump towards the end. The algaecide will eat away at most of the chlorine.

• 4-5 days prior to closing the pool, I bring the pool up to SLAM level based on my CYA and allow the levels to drift down. No more chlorine additions are needed. Approximately 24 hours prior to closing, I add the Kemtek Poly-Quat 60 Non foaming, non-metallic algaecide and allow the pump to run for 24 hours.