First Spring with a SWCG (repeated from another thread)

[kelemvor]

The Intellichlor manual lists all of these values for you on page 10.

The manual can be found here

For easy reference:


I don't think you really need to worry about TDS, nitrates, phosphates.

So you'll need about 188lbs (4-5 40# bags) more salt... Add it slowly, not all at once. Also make sure the SWCG is OFF while adding salt and for about a day afterward. If you don't turn the cell off, the increased salinity can potentially damage the salt cell by allowing more current to flow through the plates than the system is designed for.

I agree with SunnyOptimism. With SWCG, higher CYA is usually better. My aquarite reccomends 80 and I keep it at 80-90. Yours recommends 50-80 and I'd go with 80 if I were you. That's about 5# of CYA granules. Add this slowly through the skimmer. Maybe 1# a day and retest. CYA is easy to add but can only be removed through dilution.


As for the green algae. Don't bother turning on the SWCG until you've got it cleaned up. Shock with liquid chlorine. Do this before you adjust CYA. To shock with a CYA of 50 you need at LEAST 15ppm FC. You'd probably be fine taking it up to 20. Check and add chlorine a few times a day until it looks clear and you get 0-0.5 CC and you lose less than 1ppm FC from sundown to sunup (to take chlorine loss due to sun exposure out of the equation).

Here's the chart that tells you what levels of FC you use for shocking. http://www.poolsolutions.com/gd/best...ine-chart.html It's based on your stabilizer (CYA) level.

[SunnyOptimism]

Yeah, that's standard Pentair IntelliChlor boiler-plate. They updated it a bit as my older manual says the CYA should be no more than 50ppm. And I love how they say to use Super Chlorinate mode to remove CC's...don't waste your time and electricity as SuperChlorination does very little. All it does is run your IC for 24hrs straight at 100% power. The net effect is only a minor rise in FC and MAJOR wear and tear on the cell plates. Better to remove CC's by simple bleach chlorination at shock levels. As for phosphates, it is remotely possible that you can form calcium phosphate precipitations if the phosphates levels are ridiculously high BUT the water chemistry has to be so far out of balance that other problems will manifest themselves way before calcium phosphate scale ever becomes an issue.

So I agree with @kelemvor except that I add powdered stabilizer (CYA) by placing 1 pound of it (16oz) into a nylon skimmer sock and tie off the top. Then I either hang the sock in front of a return, float it in a blue chlorine puck floater or put it in the skimmer basket. That way it can dissolve slowly and not clogged anything up. Also, powdered stabilizer is very acidic and will lower your TA so if you do use the sock method in the skimmer, only do so while the pump is running. If the pump is off, remove the sock from the skimmer and put it in a float. You do not want a large amount of CYA sitting in a small volume of water.