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As of two weeks ago the pool finally cleared up, crystal clear!! im not sure what happened, but apparently the SLAM finally worked. Kind of a mystery why it took so long. thanks again for helping me with this process.

good call on the "waste" option. I sure hope it's dead algae, I've got quite a bit of chlorine in the pool. I've been vacuuming with the filter inline and it may just keep getting recirculated. Tough keeping the kids out this time of year. Food for thought on letting it all settle, then...

Thanks Texas, I'll give a better read when I have time. Post #49 is encouraging! I pulled the multi valve and deep cleaned the filter. Took about 30 minutes to clear the orangish,brown water with lots of small debris. The top of the sand looked good when opened, but deep down it was dirty...

This morning FC -29 - I added two gal of 8.2 bleach last night, figured why not with all the rain coming. CC- 0 CYA- 20-30 we don't have any lights, I pulled the drain cover and all is well. I pulled the caps that hold the liner around the main stairs, no algae from what I could tell. I gave...

birds eye view For a different perspective

Here's the pool this morning after a ton of rain last night. More rain on the way. 2nd pic shows the dirt or sand buildup. It's very fine, like dust. Could it be dead algae? The last pic has a drain in there somewhere.

How's the SLAM coming along?

We're not on a well. CYA is tested outside with sun at my back. I test and retest to confirm. Shallow end @ 3' is clear, but doesn't reflect liner color well. Deep end is green but I can see the drain at 8'. i wouldn't think CYA could be higher, all 4 tests I've done have been right around...

This is a shot in the dark, but should I start over. Let the FC drop, set PH to 7.2 - 7.5, and start SLAM over from “scratch”? There is very little change to clarity and greenness of the water. I was going to deep clean this weekend, but wife talked me out of it since were renting. I could...

perhaps. Is there increased filtration efficiency with “dirty sand”? I backwashed the other day and it was clean and clear. So at this point I’ll wait until a 25% increase on PSI.

I did an OCLT. FC at night - 24 FC in the am - 22. FC now - 17. I have a couple puck in the in line chlorinator to hopefully bring the CYA up a little. I’ll test again in a week or so. Would a bag of shock or two work better than adding cyanuric acid to a sock or floater? I continue to get a...

FC- 24 CC- 0 CYA - 20 I don’t know if the rain and backwashes can make the cya drop, but it was higher 2.5 weeks ago. I agree, with the time I’ve been SLAMMING the pool should be crystal clear. the bottom is free of debris and we brush daily.

Here's of deep end by return - - - Updated - - - like I said I’ve kept slam levels up. I backwash every day. I may do the deep clean but the pvc lines are glued in and I’m a bit intimidated to pull them apart. here’s a pic, post to follow - - - Updated - - - Here's the pic of the pump...

Well, initially after finding the algae the water cleared up enough to see the deep end drain. I’ve kept it at shock level and haven’t seen improvement from then. it’s been 2.5 weeks since then. I’ve double checked the cracks and ladder but haven’t found anything that could keep the pool from...

OCLT results using the 5ml 1:1. 30 ppm last night. 22 ppm this am. Keep on slammin'!

Well, I went out and jumped in to double check the ladder. Started scrubbing it again and noticed the bumpers on the bottom were a bit ajar. Started rotating and then poof, off they came and a plume of algae came out. So I flushed with fresh water a hose and scrubbed, hopefully the FC of 25+...

Here it is today

I haven’t done a sand deep clean. I was hoping to avoid this since the sand is only 2 years old. No light, only a fixed ladder in deep end. I scrub the top and bottom of steps. Given that I’m following the SLAM process, what would cause the pool to stay green? It looks the same as the pic in...

Will a low TA impede the SLAM process? I did a TA test and came up with TA of 80. I’ve been SLAMMING accurately for 11 days since last post and I’ve had very little change. I brush daily, bottom is free of debris, and I backwash when psi rises ~25%. Pump runs 24/7. using 8.25% bleach. FC -...

Got home from work and performed CYA test from a sample I pulled before I left so it could come up to room temp. Pool is a bit chilly still I shook for 30, waited 30s, shook again briefly. Stood back to sun and help tube at waist level. Repeated test 4 times and came up with a CYA of 40. did...

Yep, pump 24/7. Thanks for advice on backwash. i am using a TF-100 test kit.

PSI is right at 20 and is pretty steady. I backwash every day but the sight glass is clear through the process. initially I lost chlorine too fast to keep up given the low CYA. Now I've been pretty consistent with a SLAM level FC of >20. Ph when I started was 7.5 and yesterday it was 7.2. I've...

bottom is free of debris. I’m going to pull another sample for a CYA test tomorrow and let it warm to room temp overnight. After reading some CYA test threads, I haven’t been performing the test as it should. Not enough shaking, colder water, and I do it indoors, not back to sun for indirect...

I'm at a loss with this. I would think that high of a FC level would clear this algae problem. Sand is only 2 years old so I wouldn't think it needs to be cleaned or changed. It's very frustrating investing time and $ for bleach with no change. Any advice would be appreciated. Tofay Fc -...

heres how she sits

Good afternoon and happy easter all, I opened 24,000 gal vinyl pool at the beginning of April. Prior to opening the FC was at 0, I added a couple gallons of 8.25 Bleach and opened the pool shortly there after. Pool was green. Started a slam. I ran out of CYA test chems last year and had not...

Still SLAMMING! Waiting to do overnight test ‘till cloudiness is gone. Can’t wait to see the screws! Too bad we’re closing the pool for the winter. Oh well, something to look forward to in the spring. this morning’s test FC- 24 CC- 0

SLAM in progress Third day into SLAM. Green is gone just waiting for cloudiness to clear up and then do overnight test. Thanks for all the help!

Thanks again TS! Gonna pickup MA tonight and start SLAM once the ph is lowered. Here is what’s settling on the bottom. Any ideas.