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I am looking to replace my sta-rite system 3 modular de filter that I used with my 27' above ground, 17,000 gallon pool. It came with the house when we bought it almost 17 years ago and the cartridge has finally worn out. I really liked this unit. It was easy to use and maintain. My typical...

I think I may have figured out the source of my test inconsistencies. While during my SLAM period, I was running low on the R-0870 DPD powder. I’m pretty sure some of my measurements where less than a heaping amount as the instructions specify. Last night I tested my chlorine and got 10.5...

Ok. Thanks for the peace of mind! I’ve done so well with my pool over the years,mainly from info on this site, that when things go wrong, I have limited experience dealing with them. Glad these forums exist.

I'm back. Some of you may have seen my previous post. I am having a heck of a time beating back an algae bloom. Or at least what my testing is telling me is one. I SLAMed for just over 8 days. Then I finally got a zero change in the OCLT test yesterday morning. I figured I'm done...

Just to bring things full circle and to help out anyone viewing this in the future….so there is definitely an issue with my testing. Whether it’s the bottle (I have a slightly different bottle than before), how accurately I measure my 10 ml of pool water or having different people measure...

I thought the idea behind SLAMing was to maintain the shock level? From the SLAM howto: “Test and adjust chlorine levels as frequently as practical, but not more than once per hour, and not less than twice a day.” My son was still on summer beak so I had him test for me while I was at work...

No dead algae. I think I’ll Start doing this today.

Maybe. I may have to give that try.

I have been slamming my pool since 8/21. And almost eight days in and I can’t seem to get ahead. How much longer is this going to take? (I know, it probably takes what it takes) but I have never gone this long before when doing this. Plus, my pool water is crystal clear, my CC reading is...

I started SLAMing my pool this past Sunday. I thought we were making progress. I wasn’t seeing an improvement in the overnight chlorine test. Then we had torrential rains one afternoon (around 2”-3”) and the next day we got another 0.25” - 0.5” of rain. There was no sun during those two...

I use liquid chlorine. I shocked around 6:00 PM and wasn't able to test until 11:00 so the overnight test result is probably inaccurate. And my test this morning was around 6:00 AM well before the sun hits the pool. I am going to go ahead and SLAM. Seems like the best course. I was...

Hi Everyone! I am trying to determine if I have an algae bloom. My water is crystal clear. It looks good. My biggest issue has been that I can’t seem to get the pH lower (it’s on the verge of high) and the TA higher (it’s on the verge of low). No sign of algae on the steps. about three or...

Similar pattern here. We should be able to tell soon as the caterpillars are dying off. All the trees around my yard are covered in dead caterpillars.

Of course! Thanks folks!

How do I know if I have an algae bloom starting? I had to go out of town unexpectedly on Friday and when I returned, my chlorine was zero. There was no issues prior to this and my pool chemistry was normal. While I was gone, a lot of cr*p (literally and figuratively as we are knee deep in...

It took 9 days for my SLAMing process to complete. I did overshoot the SLAM FC level as run53 suggested. I don't know for sure if that helped or not but I think it did. Thanks everyone for the help.

To bring some closure to this thread....I continued my slamming for one more night and the following two nights I did the OCLT with no loss! Finally done!! Thank you all for the help.

My water is crystal clear and CC's have never been more than .5.

I have been SLAMming my pool for a week. Sunday night I tested my chlorine at night and then the next morning and I didn't lose any chlorine over night! Yahoo....I am done! Or so I thought. I did the OCLT test one more time last night make sure things were good and this morning I tested and...

Hi Everyone, I am having an algae problem in our pool. It wasn't real bad but there was noticeable green on the bottom of the pool. On Monday I started SLAMming my pool. Three days later and I am seeing inconsistent results. One morning my FC will have dropped 1.5 ppm, the next 3 ppm. How...

My test kit is the TF-100. I have been testing and chlorinating my pool. I think the chlorine did drop down below my min CYA level so that may be it. I figured I jumped on it pretty quick so it wouldn't be an issue but guess I was wrong. I am surprised though as this is the most attention I...

Hi Everyone, I have 27' round above ground pool with a brand new liner. About 4 weeks ago or so I noticed some algae on the bottom. Very light and if you weren't looking right at it you wouldn't see it. I shocked my pool, brushed the pool and vacuumed. Everything seemed okay. A week later...