Last season, my pool, an inground vinyl liner variety, was doing great. No algae, no cloudy, etc.

That is, until my heater core sprung a leak. What I realized was that I hadn't stayed on top of my pH, and I had slowly ionized my heater core into copper ions.

My pool guy came and replaced the heater core (very expensive lesson).

I did my water chemisty and lo and behold, when I shocked, my pool turned ash grey. What happened? I oxidized all the copper that was in solution and it came out on my liner.

Last fall, before close up, I added some citric acid, and partially drained and filled a few times to get the copper out. I also used a copper floculant, which produces tons of green copper oxide in the filter (cartridge), and requires frequent filter cleaning (big pain in the @$$).

My pool is due to be opened in one week. I'll pull the cover off this week. It will probably still be one big ice cube.

So, my plan for spring is to:
1. Make sure my pH is correct.
2. Check the copper level.
3. Continue to use floculant to get the copper out of solution (and out of my liner).
Any suggestions? I'm wondering if I should continue to try the partial drain and refill to continue to dilute out the copper out in addition to trying to precipitate it out.

Thanks,

Boris
Lake Elmo, MN