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Greetings All - After swim season and prior to closing last year, I got sloppy with my pH and opened this year to discover a nice sandpapery grit of scale on the walls and floor of my pool. In an effort to dissolve the scale, I've temporarily taken my CSI to around -.6 per the advice in this...

Nice. I learned something new. Thanks guys.

Anybody else notice that Camco Antifreeze (Camco 30054) is no longer available on Amazon? Getting ready to close the pool for the season and I've never used anything else. Guess I'll do some research, but figured I'd post here in case anyone has any good, reasonably-priced recommendations...

Thank you folks - I'm starting to think I may be overthinking it. The good news is I've learned significantly more about my heater than I'd known before. So I removed both headers and all looks well - heat exchanger tubes are nice and thick with no significant scale, and the bypass valve...

So I figured I would try removing the UG to see if that solved the problem (if the thing isn't opening properly, I should get hotter water with the UG removed). Nope. Water is the same temperature. So I'm about to remove the header and see what the bypass assembly looks like... Please chime in...

I have a pretty old Raypak R405B running on Propane. During this year's opening, I vacuumed last year's debris out the heat exchanger, checked and cleaned the burner, fired it up, then ran the heater for several hours but noticed no temp gain in the pool. It's a pretty simple pool-only setup...

I'm about to purchase a SWG for our IG 30,000 gal pool here in southeastern PA. Circupool take note: This thread has helped me make my decision. I am seriously considering the top-of-the-line RJ60+, on sale now at Discount Salt Pool. I look forward to a great product and great service and I...

Good morning - Filter and robot ran all night long (and are still running). Chlorine was stable overnight and this morning the water is crystal clear. DE filter pressure is up several PSI from initial charge early morning yesterday which makes sense - bacteria and algae that had produced...

FC was good after 30 mins (I had gone through 15 bottles of 10% LC at that point, each of which normally raises FC by 3...), so I picked up some CYA and Trichlor at Walmart - both are in now - hopefully FC remains stable overnight, though I smelled CC just now when I measured FC - should have...

Very helpful, Marty - thanks! I have a Taylor K-2006 test kit with the "black spot" CYA tester and bought a separate, larger bottle of reagent last year as I was having CYA issues (too high!) after using chlorine powder when opening my pool. I'll try the 30 min FC test now... I hope my local...

I'm opening my pool late this season - uncovered it last night and started a SLAM this morning. When I closed up last year, CYA was at 44. I drained 15% of water last fall, and added it back last night. By my calculations, CYA should be around 37, but when I measure, I'm getting LESS THAN 30...

Seems like I am on a witch hunt. For various reasons I wasn't able to actually MAINTAIN until Tuesday. Yesterday I finally had time to brush. This morning I have zero FC loss. Old Chlorine? (I used a different brand for the SLAM). Lower CYA than I thought? I'll investigate further today...

AM FC reading is 1/2 point HIGHER than the PM post-SLAM start reading (taken last night after about an hour of the pump running to distribute the liquid shock). Water started at 90, and the air was quite cool last night, so there was LOTS of evaporation overnight... Pump is running 24/7. I have...

Test results follow: FC 8.5 or 16 drops ;P CC <0.5 pH 8 TA 125 (probably slightly lower) CH 250 CYA ~45 (measured properly - according to Taylor instructions) SLAM started. Sig updated. -Pete

Clear as mud, eh? Rushing to get out of the house this morning did not help, I guess... Test kit is a Taylor K-2006. Readings are in drops, for the smaller size water sample, so (dividing by 2) they equate to: 11.5, 12, 14.5, 14.5 PPM FC. Catanzaro: Pool is in-ground plaster. The water is...

Thanks again Jim - I agree with your assessment - the only LOGICAL thing I can think of (though I have very little experience - only my reading here and a scientific mind) is that FC should drop more than 1 point overnight. That said, I just measured FC and it was where it should be... sort...

Thanks Jim. Sorry - I guess I wasn't clear. The FC loss is happening during the day. No significant FC loss overnight that I'm AWARE of, but I will confirm. -Pete

Greetings All - First year managing my (new to me) 30k+ gal in-ground pool using TFP. All has been good since an early-season SLAM. Lots of rain this season, so I've been able to lower my CYA from 90 earlier in the season to the high 40s recently. I'm using liquid shock to chlorinate - my...

Quick question - Is 6:30 AM a reasonable time to check FC for OCLT purposes? In other words, should the AM OCLT test be done while it's still dark, or is daylight OK so long as the pool is not yet in direct sunlight? I'm also doing a SLAM out here in Kennett Square not too far from the7guys...

If you're in PA or NJ (and possibly elsewhere), Ollie's Discount Outlet carries liquid "Shock" for $2.99/gal. This stuff is yellowish in color, somewhat thicker than regular bleach, and burns a bit when it splashes on your skin ;) Based on my experimentation, it is approximately 4x as strong...

Greetings All - First post - been lurking since last August when we bought our new home with a 30k gal in-ground pool. All had been good so far this year until late last week when I let chlorine drop to .5. CYA is approx 55. Water immediately went cloudy and filter pressure jumped up 4 psi...