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Suffered through a problematic season. My water level fell below the skimmer due to excessively high temps and not a lot of rain. My pool is in desperate need of a makeover (liner, concrete deck, pump timer, etc.), and I decided not to spend $300+ for water when no one was going to go swimming...

So I replaced all the grids and the air relief assembly in response to dirty DE being pushed into the pool through the outlets on startup. I checked the manifold and the inlet pipe and did not detect any cracks or other ways that the water might be returning to the pool. I'm wondering whether I...

I'm in the process of replacing the Filter Grids and the Air Relief assembly in my Hayward DE4800 filter. The new Air Relief assembly (the little "finger" that attaches to the top of the manifold) sticks straight up, and hits the inside of the upper filter housing. My question is, if I...

The FC was 11.5 last evening after the sun went down, and 11 this morning. CC has remained at 0.0 and the water is clear, so looks like my SLAM was a success. My CYA is only 30. I have an online chlorinator that I can put three or four "hockey pucks" of stabilized Trichlor into tomorrow before I...

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As recommended, started a SLAM Monday night at 12ppm FC. Ran overnight, Tuesday morning down to 11ppm. Boosted FC back to 12ppm Tuesday morning, brushed and vacuumed, FC down to 11.5ppm this morning. CC has remained at 0.0 and the water is clear. I'll check it this evening after the sun goes...

20000 gal in ground pool, vinyl liner, DE filter. Current readings : FC 4.0, CC 0.0, pH 7.6, TA 40, CYA 30, CH 25. I keep the FC between 4.0 and 5.0, and although the TA is below what is recommended, I fell that since the pH is stable, there's not a need to add any baking soda. I've been...

I just ordered a solar cover for my in ground pool. The pool is surrounded by trees and we only get about 3 hours of direct sun each day. My water temp has gotten as high as 72 degrees F. Just curious whether it's best to leave the cover on during the day when not in use as well as at night? I...

First water test of the season yielded these numbers: FC. 0.0 CC 0.0 CH 100 TA 50 CYA 20 pH 7.35 With CC at 0, should I SLAM? Water is a little green. Having said that, which parameter should I address first? I know FC and TA need to be raised, but not sure if I should try and raise both...

Good catch... just checked...FC is now 7.5ppm, CC is 0.5 and TC is 8.0. Going to add another gallon to get to FC of 12

Ok... Started the SLAM using Pool Math added 2.5 gallons of 10%LC. Will check FC tonight (target 12ppm) before bed, leave the pump running and check again first thing in the morning. Thanks for the feedback! I'll reply here tomorrow for an update.

Opened the pool last week. Water was clear with some expected debris at the bottom (thanks to TFP for a very good closing last year!) Vacuumed and brushed, backwashed and recharged the DE filter. CH is 100, TA is 90, CYA is 35 and pH is 7.2. Virtually no chlorine (FC is 0.5). Using Pool Math to...

Thank you so much for the quick responses. I'm heading out to Harbor Freight this evening to pick up the compressor. Thanks to TFP I've had a short but sweet (and clear, well balanced and problem free water) pool season!

I will be closing my IG pool this week, and have decided to purchase a portable air compressor with a 1/4" adapter to attach to the threaded drain plug at the bottom of the skimmer basket. I previously used a shop vac, but it didn't have enough "grunt" to completely blow out the main drain. Not...

Thanks for the quick reply - How would I use either technique for stains on the waterline? Would I fill a sock and scrub the stains with it? Would I also want to crush the puck as well?

After 4 weeks of SLAMing (with a 4 day break in the action caused by a planned vacation), my pool is clear and algae free! I passed the OCLT (no overnight drop in FC) and the numbers support an end of the SLAM: FC 13 ... CC 0.5 ... CH 200 ... TA 80 ... CYA 35 ... pH 7.3. If I'm not mistaken, now...

I'll have to presume that there must still be some algae left. I haven't added anything aside from what is recommended on this site. I'll check the inside of the weir door and the skimmer entrance as well. I guess it's just a waiting game at this point...

I began SLAMing about three weeks ago. The water was such a dark green it almost looked black, and I couldn't see even to the first level of the steps. The water is now a very slight shade of green, and clear (not cloudy) - the main drain is easily visible in 7+ feet of water. However it seems...

Not quite done with the SLAM. I have a Hayward 1HP "super pump" single speed. No one available to "pool-sit". Was considering dropping 3-4 3" stabilized "hockey puck" chlorinating tabs into the in-line chlorine feeder and an extra half gallon of chlorine. I'm currently holding about 14 ppm FC...

I am going to be away for four days beginning tomorrow. I have been SLAMing for the past 11 days(!) and I don't want the pool to regress in my absence, but I'm hesitant to run the pump 24/7 when I'm not home. Any thoughts on the most effective time of day to run the pump for 8 - 10 hours? Also...

Thanks. What kind of filter "schedule" should I implement once things settle down?

I'm on day 11 of SLAMing what was a literal swamp, and I think I can see light at the end of the tunnel (actually I can see the main drain! ;)). The water has turned a tint of bright green (as opposed to a muddy green two weekends ago), and the CC has dropped to 1.0. Numbers: FC 13 ... CC 1 ...

I'll take it apart and give it a good cleaning and once-over after I SLAM it

The pool was closed for two years, and when I opened the filter the grids were ripped. I did not replace the "finger" at the top though....

I recently started a SLAM and I noticed that after backwashing there is a small amount of DE coming out of the returns closest to the pump. I have a DE4800, for which I understand the fresh charge should be 5 pounds of DE, and after a backwash I add about a pound of DE. The grids were replaced...

Sounds good. I'm going to add another gallon and a half to get to FC of 20. I am very happy with how things are progressing. These forums and the helpful advice I have been getting have saved me money and numerous trips to the pool store! My pool was a swamp when I started on Saturday, and now I...

I think I know the answer but wanted to get the groups input. I am in the midst of SLAMing (day 5). Just finished testing the water: FC = 10 , CC = 2.5 , TC = 12.5 , TA = 120 CYA = 50 , pH = 7.3 My question is regarding adding chlorine. I want to keep the FC up around 12 ppm, and I need to add...

Thanks for the quick replies!