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Last night's readings at 11:30PM: FC: 12 CYA: 30 Tried OCLT, FC is 11 at 8AM. FC dropped 1 ppm overnight. Filter pressure is ticking up slightly at 22psi. My FC dropped from 21.5 to 12 during the day (down 9.5).

DAY 12 of SLAM FC was 22 last night at around 11:30PM. Water was clear and not much to vacuum. I can see clearly to the bottom of the pool! :D I thought I'd try OCLT, so I didn't add any more chlorine. I checked again at 6:30AM and FC was 21.5. We may have passed OCLT on the first try! It...

Week 2 of SLAM - still maintaining above a FC of 24. I lose about 4 FC overnight. Water is pretty clear and filter pressure has stabilized for 2 days at 21 psi. I add 2 gallons of chlorine per day - 1 in the AM, 1 in the PM.

Yes CYA was 60 when I started, but I've been vaccuming to waste and backwashing a good amount of water and replacing the water. I haven't tested CYA since the beginning of the SLAM. Is now a good time to test again? Or should I just wait until I get through the SLAM?

I'm a tiny bit afraid I've bleached my liner...but it could just be the cloudiness. It was a darker blue. Is it possible to bleach the liner with FC 24?

Day 7 We've had a breakthrough! We've changed from green water to cloudy blue! Although it's still very cloudy, I can almost see the bottom of the pool in the shallow end. I deep cleaned my DE filter yesterday. Prior to cleaning, the filter pressure was raising from 22 psi to 30 psi within...

Thank you to you (and your friend)! :D Sorry I am completely clueless with all of this. I'm learning so much here, I've been on this forum non-stop for days. Thank you Texas for helping out! FC was 22 at 5:30PM, much bigger drop off than yesterday (I'm assuming because today was a sunny...

Separate question - but I was instructed by an admin to keep all questions in this one thread: My pool has two pairs of skimmers/returns but only one pair works. Years ago we had someone come out and test the pressure on both lines and there was no pressure on one of them. The guy told us it...

OK thank you Richard and Tim! I think the only option is vacuuming to waste and adding new water (and diluting the chlorine level). If I recharge the filter with cellulose fiber, that only buys me an hour before the pressure raises 10psi and I have to backwash/recharge it again. I can't...

Added 1 gallon of 10% at 10AM. 7:50PM FC is 28.5. Hoping for some improvement in Day 4. I tried running the filter for an hour around 3PM, backwashed and recharged it with cellulose fiber. In the hour the pressure went from 20 to 30. Backwashed again and switched back to recirculate around...

Day 3 9:30AM FC is 25. Lost about 4 over the last 11 hours, seems better than Day 1. Thinking about adding 1 gallon of 10% to cover me while I'm at work. I have been running the filter on recirculate for the first 3 days. There was a slight improvement in color from a dark green to a...

Re: 0 FC in the AM? Thank you Tim for this advice! I ran out of the R-0871 FAS-DPD Titrating Reagent, just 48 hours after starting the SLAM process. I would be out of luck tomorrow if I didn't re-order. Thanks for the help!

OK, took a second reading today, 1 hour after adding the 2 gallons of 10% chlorine. 8:40 AM is FC 25. I'll keep checking throughout the day. I think I'm going to wind up buying all of the bleach/chlorinating liquid from all of the Walmart stores in the area. :) Though I am running my filter...

Re: 0 FC in the AM? Thanks Tim, I reordered those. I didn't realize how many drops I would need. First readings were: CYA: 60 FC: 0 According to the chart, FC target should be 24. I started the SLAM process tonight. I added 6 gallons of 10% liquid chlorine. I waited 1 hour and got an...

Re: 0 FC in the AM? Oh ok wow, I had no idea the reagents would run out so quickly. Which ones should I re-order? Should I re-order the R-0870 DPD powder and the R-0871 FAS-DPD Titrating Reagent?

Re: 0 FC in the AM? My K-2006 arrived today, 4 days early! I'll SLAM the pool tonight and hope to have some updates tomorrow. Thank you so much everyone!!!

Re: 0 FC in the AM? Ah gotcha. The chlorine lock is a myth. I am so glad I found this site! I regret spending so much money at the pool stores in the past but man I'm lucky I stumbled here. I wish the pool stores carried the K-2006 kit, but maybe they would lose money if they did. I have...

Re: 0 FC in the AM? Thanks Tim! I do know about the SLAM method, but wanted to rely on the pool store to complete SLAM until my test kit came in. Was just wondering if the pool store test results seemed consistent. But you are right, I should probably just deal with a green pool for now and...

0 FC in the AM? I'm in trouble. Is it possible for your pool to drop more than 5 FC overnight? I put 8 bags of 1lb shock and 5 gallons of 10% chlorine in the pool yesterday and the chlorine level in the pool this morning at 10AM was 0. I have a D.E. filter and have been running it on...

Thank you so much Richard! This is very helpful! I hope you are right, I want to get rid of the swamp for good. My filter does have a multiport valve. So I'm going to take your advice and run things on recirculate for a few days because when I'm at work, I really can't get to it to...

My pool is currently a green cloudy mess that appears to be getting worse. It's 16x32 and I can't see to the bottom even on the shallow end. After years of struggling to fight off algae by making tons of trips to the pool store with no help, I found this site and I hope to take control of the...